Following up here since I recently checked my IHG account - both transfers finally posted on 5/15, which is pretty late since we had already booked the hotel using transferred chase points, and now we don't need the transferred points on P2's account.
I messaged them to see what was going on via their iMessage services. They told me it took over 2 weeks because they wanted to verify different last names between myself and P2. They ended up verifying through Chase. Funny that they didn't tell me until that point even though I had been on the phone with them for a long time, with many line transfers during the week that I attempted the transfer. I pushed them to initiate a transfer back to my account for free, which they couldn't do.
Now I will need to wait out the 30 days after we signed up P2 as a business account to attempt the transfer back to my account.
Very frustrating, wouldn't want to deal with this ever again