My folks are flying into HKG on Delta arriving at 7:15pm and want to connect to a Emirates flight going to BKK at 10:10pm.

The kicker is the two segments are on two separate tickets so they'll have to collect their luggage and check-in again.

I see that the Delta flight is usually on time but occasionally has been late up to forty minutes. I THINK they'll be fine barring a major delay but can anyone reassure me that this SHOULD be enough time for them to get on the second flight?