I have 4 Delta gift cards which will be sent over to the state, if I don't return their included form indicating that I still want them lol. Ridiculous that it has be done through snail mail in 2023 and no explicit way to do it online/electronically.

Anyway, if I were to purchase a flight, the total of which would be a little over the total amount of these gift cards, and then cancel the flight in under 24 hours, 1)would I reset the clock on these gift cards and 2)would the refund of the gift card portion of the fare be consolidated onto just one gift card with a completely new gift card number?

Thanks!