Originally Posted by
orbitmic
Exactly - for the purposes of the reward booking engine, “stopover” doesn’t necessarily mean “stopover” but just “flight 2 departs on a different day than flight 1 arrives”.
Well it doesn't even have to be that. You can actually use the stopover function for a same-day connection as well.
It can be a useful way to get a much wider choice of connections than the basic search would otherwise offer you.