iPad Air 2 to Air 5 Quick Start Failed Transfer, Solved
Both running iOS 15.5 (I think, afraid to check while they are transferring). Failed twice. Got through the touch setup and activation of ApplePay credit cards. Then "iPad unable to complete data transfer, the connection to your other iPad was lost."
Maybe I'm about to jinx the transfer now in process. Previously did not reboot my Air 2 before starting the Quick Start procedure. This time I also rebooted the Air 2 while the Air 5 was reset/wiping itself from the previous failure. Failed Quick Start gives no choice but to reset the entire Air 5 no matter it seems to be at least partially set up with working Touch and ApplePay. I have 3 texts stating my CC was added to ApplePay.
I will remember in the future to reboot the source iPad before transfer as this is the first time I've seen the transfer display and progress bar. 16 minutes to go!
Both Air 2 and Air 5 are 64 GB. My Air 5 is not yet listed under "My Devices" here.
iPad Air, iPadOS 15