framer - never checked this on the NG but I seem to recall the Classic had a 2.5 minute inhibit after t/off on changing engine limit from TOGA to Climb? I think LVLCHG was therefore likewise inhibited. That was the reason the call
WAS 'N1 Speed XXX' (especially in the days before VNAV
- yes, boys and girls , we DID manage). With the advent of VNAV I think that mode change overrode the time limit, but I cannot recall clearly now.