Neobie, I think you have done a valiant attempt but have narrowed your focus more than is necessary. I decided to widen the time range of how apart each of two flights needs to be, mostly to qualify flights that are slightly less than on hour apart. Another problem with your analysis is the assumption that it takes no time at the airport for teams to make it to tranportation. Even though the teams have carrry-ons, the cameras and sound equipment have to be checked, so retrieving them takes time and possibly customs would add to that. I think about 45 minutes would be needed at HKG for AR14 units of 2 members, one cameraperson and one soundperson to disembark.
Here is what I found using today's (admittedly not yesterday's like you used) schedule of actual arrivals into Hong Kong. If you do it that way and make the resasonable assumption that these cities are large enough to have daily service to Hong Kong(not a few times a week), here are the cities from which flights could have originated and landed in the 5pm to 7pm time frame:
Taipei 522pm, 605pm
Bangkok 503pm, 628pm
Shanghai 518pm, 605pm
The incoming flight should logically be from anywhere in eastern or central Asia and I expect the outgoing flight maybe 2 days later to be going south.
