Waitlist while booked

I put myself on the waitlist for a class at a better time slot (6:30p) , but since I saw another slot (7:15p) that had space I signed up for it just in case.

I know if it's outside of the 10 hour window, you automatically get added to the class. But I also heard Solidcore doesn't let you book two classes in one day (and these would conflict anyways).

So how would that work? Would I get a notification that I am off the list for the 6:30p slot and have to manually cancel my 7:15p slot?