The TOGA buttons are usually on the side of the thrust levers. It looks like the reverse levers in the photo are labeled TOGA. The engines were at idle during

The TOGA buttons are usually on the side of the thrust levers. It looks like the reverse levers in the photo are labeled TOGA. The engines were at idle during an extended float; so it could take longer to spool up. The crew knew this, but that's five really important seconds. Definitely should have waited for the kick in the pants before raising the gear. In a heavy aircraft, things happen slower. The airspeed will decay slowly after raising the nose, but you will see some initial climb until gravity has time to assert itself. Increasing headwind will introduce transient increased airspeed masking the decaying energy situation. I wonder why spoilers were not used, but don't know how that fits in with 777 procedures.