Quoting Piecey.:" That's what the carseat people said about all carseats? Or specific ones? It definitely depends on the seat and your vehicle whether or not bracing is allowed."
That's what I was told, well, actually I was told they could be touching, so long as it wasn't pushing against it. Which, even with it moved an inch forward, the foonf in the video still gives way more room than most convertible seats. That's my biggest issue with seats and why I was planning on getting a Coccori with our next until I saw how space efficient the Foonf was, and it would obviously last a lot longer than the Coccori would. I would also be spending considerably less, even if the seat is $400. It would be a seat that lasts without needing to be replaced until a booster is required.