It makes no sense for the chewing out and suspension to occur after the funeral. it would have been almost immediate after the incident.
A gangster swinging a bat at Billy, in the massage parlor, changes in the subsequent shot.
When Chan's 747 lands in Hong Kong, it has a red stripe along the fuselage and a red logo on the vertical stabilizer of the tail section. When it pulls up to the gate, it is a Pan Am, with blue lettering and logo without a stripe.
In the boat chase scene, the camera helicopter's shadow is seen on the water.
As the bad guy drives away in the stolen boat near the beginning of the movie, the stunt driver is visible in the cabin below.