i did small experiment
same dough cut in two portions after bulk proofing
shape and let it sit for same amount of time
owen time i sprayed both breads and slashed one 4 times the short way and other one once long way
owen lift difference was huge, the one with long slash is about 30-40% bigger in volume and you can see how well bread made use of this slash
the whole top opened up to make room for the volume jump where the other one with short slashes just had nowhere to go
Bake Me !