The synthesis of communication and data visualisation is far from a new concept. However, with the accelerating digital pivot, the marriage of instant messaging and data panel visualisation is more pertinent than ever. This amalgamation presents a powerful opportunity to facilitate seamless interaction with data, augment decision-making processes, and foster collaboration. However, it also confronts a labyrinth of design complexities and challenges that require cautious navigation.

Data Visualisation and Instant Messaging: A Match Made in Cyberspace
Data panel visualisation, a potent tool in the data scientist's arsenal, simplifies complex data patterns into visually engaging and comprehensible narratives. Simultaneously, instant messaging platforms, already deeply woven into the fabric of our digital lives, are effective conduits for real-time communication and collaboration.
By embedding data visualisation within instant messaging platforms, users can manipulate, discuss, and react to data insights without needing to pivot between platforms. This integration has potential applications across myriad sectors - from enabling doctors to discuss patient diagnostics in real-time, to assisting finance professionals in interpreting and acting on volatile market data.

Charting the Design Course: Potential Challenges
Despite its profound potential, the integration of these two domains is an intricate task, confronting a multitude of design challenges.
Preserving Simplicity Amid Complexity: At the heart of effective data visualisation lies simplicity and clarity. Conversely, instant messaging environments are dynamic and often cluttered. The challenge lies in designing data visualisation tools that maintain their simplicity and accessibility amid the bustle of instant messaging threads.
Balancing Interactivity and Noise: A key benefit of this integration is enabling users to interact with visualisations in real-time. However, excessive interactive elements might lead to 'information noise', detracting from the primary narrative the visualisation is intended to convey. Designers must strike a balance, ensuring interactivity enhances, rather than hinders, the comprehension of data.
Maintaining Data Security: With the exchange of data within instant messaging platforms, security becomes a paramount concern. Developers must ensure robust encryption and data privacy measures are in place to prevent data breaches, which could be particularly damaging when dealing with sensitive information.
Tailoring Visualisations: Given the diverse user base of instant messaging platforms, the design of visualisation tools must be versatile to cater to different data literacy levels. Providing customisation options and ensuring visualisations are intuitive and self-explanatory is a challenge that designers must tackle.
Adapting to Varied Screen Sizes: The increasing use of mobile devices for instant messaging presents another design hurdle. Visualisations must be designed to maintain their integrity and legibility across different device screen sizes.

Seizing the Opportunity: Navigating the Maze
Successfully navigating this design maze requires a combination of user-centric design, rigorous testing, and ongoing adaptation. Prototyping and user testing are vital steps to identify and rectify potential design issues early in the process. Designers must be open to feedback and willing to iterate their designs continually.
In addition, harnessing AI and machine learning can aid in personalising data visualisations based on user preferences and past interactions. They can also assist in filtering out 'data noise', ensuring that only relevant and significant insights are presented.
To ensure data security, the use of end-to-end encryption, stringent access controls, and secure data storage practices is crucial. It's also important for providers to be transparent about their data security measures, to build trust with users.
Finally, collaboration between data scientists, UX designers, and communication specialists can help in designing effective, intuitive, and engaging visualisation tools for instant messaging platforms.

Confluence of Visualization and Conversation: The Road Ahead
As we grapple with an increasingly data-driven world, the demand for accessible, collaborative and real-time data interpretation tools is set to grow. The integration of data panel visualisation and instant messaging is an innovative step towards meeting this demand. While the design challenges are significant, with careful navigation, this confluence can herald a new era of data-driven communication, fostering collaboration, enhancing productivity, and empowering users to harness the power of data at their fingertips. As we chart the course through this design maze, it’s clear that the destination could redefine our interaction with data in our increasingly interconnected digital world.