I think these are maximum or slow pace walking times, and probably allow for the time it takes if people just stand on the travellators. If you walk on the travellators and are able, and fit it should take half the suggested walking time, even with a trolley or wheeled luggage. 9minutes to do about 350m is very conservative.

And I'm sure, for the vast majority it wouldn't take 15 mins to get from the SK lounge in T2 (ie the E sign on the map ) to F37. I'd say most could do it in 10, some in less (5 if flight is closing!).

And as for buses, really? I absolutely loath getting off a plane and onto a crammed bus with poor-to no aircon. It may work OK for those wanting to get from F60 to B10, but what about the passengers who need to get to F59? They would have to catch a bus to some central point, find there way up some stairs and make their way back to F59. Can't please all the people all of the time.

Also, for comparison once I was 25 mins late in HKG leaving only 35 mins to connect and upon deplaning I was handed a BP a later flight, not my original one. And this was needed, as it took 15mins to pass through security at the transfer point, and still involved lots of walking. Same situation also happened in SIN and made my original flight no problems. I think everyone is overlooking the time consuming central transfer point add both waiting and walking time. (although perhaps in HKG, it would have been quicker to take a longer walk to one of the more outlying transfer points).