Indeed, which also contributes to the increase in the % of reference plane area (not masked by the plank) relative to the total floor area. I estimate the max ref plane width on the RB19 to be ~800 mm.
This perhaps worth noting because the 2022 RB18 was revealed to have the widest reference plane when the floors were seen through the season (compared to Ferrari and Merc).
This center floor area is also shaped approximately like the X2014 car from Gran Turismo. So the FIA audits of Newey's hobbies may need to go back a bit further than the Valkyrie.