This aired after the crossover episode of MacGyver, "Flashlight (2017)", which ended with Kamekona having unmistakably gone back with MacGyver and his team, to cater his birthday event. It's even specifically mentioned that he's far from home. Yet in this episode, clearly established as occurring immediately after the events of said episode of MacGyver (Kono is heard passing on Jack's greeting to McGarrett), Kamekona shows up at their door immediately after said greeting, in the same scene, despite that he's supposed to be currently away.
While Officer J. Terry (printed on his uniform) brings in a suspected drug dealer into Five-O offices from Palace Elevator, Chin Ho says, "Thanks, Tony. I'll take it from here." However, his name does not seem to begin with a T. (26:44)