I couldn't recall any Bs being that hard (and again, I've done them on three accounts, under all three major physics iterations) so I hopped back in to check.
24.640 on my first run as I got my memory of it back, 24.255 on my second. If anything, 24.600 is too easy if someone like me can get almost-gold with zero warmup and almost three-tenths' gap on my second run.
23.76x is the world record, so taking WR-to-gold margins of +3% as we see in Time Trials it could perhaps bear to be 24.475 or less.