Navigation + Filtering in a custom Deneb Vega visual

Dear reader,

I'm a consultant currently working on a Power BI dashboard which has required me to include a custom visualization.

For this I used a Gantt Chart template created by David Bacci (see Deneb-Showcase/Gantt Chart at main · PBI-David/Deneb-Showcase · GitHub for the code)

The standard template looks as follows:

The client is asking me to implement a feature that allows users to select a value in the "Tasks" column, e.g. "Story boarding", and navigate to another page with a tailored view based on this selection.

So, for example, one would click on "Story boarding" in the column and the dashboard will then navigate to another tab. And in this tab the visuals will be filtered such that "Task == Story boarding".

I have discussed within my team that this is likely impossible, but we wanted to know for sure. 

An alternative solution is of course also welcome! Unfortunately, an invisible button overlay will not work, because in our case there will be a lot of rows and scrolling will be required. Besides, the visual will be dynamically updated. 

Thanks a lot in advance! 🙂