I haven't ridden in those seats, but I am trying to imagine doing so...I travelled overnight in a Renaissance Coach once on the Ocean when the sleepers were sold out. I really liked the option of having a single seat in the 2+1 layout and found the seats just fine. Instead of the usual reclining seat where the seatback encroached into your neighbor's space behind.....the Ren seat slides forward and unlike a 'Dayniter' there is no leg rest but there is a footrest.
https://cptdb.ca/wiki/images/9/98/VIA_Rail_Canada_Renaissance_Coach_interior-a.jpg
While the "recline" mechanism doesn't infringe on those behind you, it would seem to me that it would limit you extending your legs forward. It would certainly bring your knees closer to the seat in front of you...
I guess I will just have to try them to really know....