F1 to H4 COS - eligible for cap gap?

My wife is on F1 OPT that is expiring on October 19th.

We have applied for H4 COS and H4 EAD together. received receipt but no approval yet.

Can she continue working till she receives an approval of H4 Status? is she eligible for 240 day Cap gap extension. We called USCIS Help desk and that is what they stated to us. But wanted to be sure about it.

240 day allowance is not cap-gap. It allows her to stay in US but doesn’t allow her to work. She should stop working once OPT EAD expires, and can start working once H-4 EAD commences.