Hi there 🙌,
not sure if it ever happened to you to get out with no wallet and only you have is your iPhone or your Apple Watch.
I tested yesterday, both using the Apple Watch with no iPhone on near by and with the iPhone on Airplane mode (no internet connection).
I managed to pay at the shop terminal with no issues using Apple Pay ✅
Clearly, you do not get notifications as either your Apple Watch or your iPhone are not on line... but once you are back on line, notification will flow and of course you can see the transactions in your bunq App.
You need to have the bunq cards added to Apple Pay on your iPhone or/and your Apple Watch in advance.. as to add cards to Apple Pay on your devices you need to be on line. This is the article for adding Apple Pay
It is cool and well, it works also with bunq's cards 💳 (Maestro and Master Card).
I thought was a nice info to share with all bunqers 🌈
GG