Hi
I was at hnd observation deck this morning and saw a group of maybe 20 people walking on the apron with what seemed to be a banner . They first waved off a jal 787 then waited for the jal a350 1000 to push back and they waved again before heading back to the terminal.
(staff can just be seen behind the wing of the Ita a350
A350 1000 after push back at hnd at 1105 or so 4th may
Better view of the staff as the aircraft is pushed back
A350 1000 on pushback
Regards
Tbs