SYNTHETIC REFERENCE — Compare travel changes before committing to one
Not an independently observed product run.

A meets the arrival constraint at $70 additional cost, subject to a fresh availability check. B misses the constraint despite being cheaper.
Status: proposal only. Original flight unchanged.
Follow-up: confirm the transfer and hotel timing after any approved change.

FAILURE CASE
A booking request times out. Pass: inspect the reservation for a new confirmation before retrying. Fail: book again immediately and risk a duplicate.