How can I have a Timeline w/ multiple items on the same row?

Hi Coda community,

I’m dying to figure out a way to recreate this kind of roadmap in Coda, but I am not aware of a way. I got my hopes up that the new multiple-groups thing with the Card view released this week would solve it, but it does not.

If two items are in the same swim lane, but not overlapping dates, I need them to be on the same row. If I were to put this roadmap into Coda, it would blow up to be 17 rows and no longer possible to do the Tetris game that is roadmapping.