Can I use a Gift card & avail an offer in one transaction?
We want all possible discounts in one go, isn't it? Unfortunately, you'll be able to avail either debit/credit offer or use the gift card in a transaction.
As for debit/credit card offer you need to make the remaining payment via the same card.
However, you can club a gift card with a cashback/non card offer and grab it.
All you do is apply the gift card and payoff the balance with desired cashback/non card offer.