I just transferred points to MrsCP and AwardWallet says both have 2 years to expiration, probably based on most recent Activity date (as Hyatt has no available "points expiration date" field, apparently).

Interestingly, instead of removing ~10K from mine and adding them to hers, they added 10K to both accounts. My expiration date was tomorrow, so I guess I'll see soon if those points disappear in a day due to expiration. Unless they realize the error and zero it out - but based on the transfer competency, I doubt it.

Fwiw - I had read "3-4 days to transfer" in posts here, so I completed the form on the 11th. With a 6 day response time, and multiple un-documented requirements requiring an update, the points transferred today, a day before the expiration.