Playing through Sal's route on path A. It seems like there are parts that don't register and repeat at a later date.
SPOILERS AHEAD just in case.
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So Sal and Dave already confessed to each other in a way at an earlier day, not sure which one. Now on day 18 Sal is confessing again and Dave is surprised about it, sort of as if the previous day's confessions never happened in this route.
Guessing it will be remedied at some point but wanted to point it out just in case no one else has.