CX 838 to Vancouver always seems departs in the Gate 60-69 range.
(I think it's one of the last long hauls to leave HKG in the late afternoon, and afterwards things seem to get quite for CX [at least for long hauls])

Perhaps CX puts some long haul flights there to encourage passengers (except non flyertalk type people who visit multiple lounges anyways) to visit The Pier instead of The Wing (so if The Wing seems to overcrowded, they will move a one of the later departing long haul flights to the gate 60 range)?