SMOC - that's excellent, thanks very much, all much clearer now.
To take it a little further (if I may) just to further my understanding of the whole thing...!
Is full CLB thrust a significant increase on the TOGA/2000fpm thrust?
Am I correct in thinking that selecting FLCH at 1000ft (window remains open) will leave the AT in THR? Selecting the mysterious THR button post acceleration will then engage CLB and a change to THR REF?
Out of interest would using FLCH instead of VNAV be a more "controllable" way of managing a go around into a busy environment with, say, a relatively low missed approach altitude (and low MSA)? My thinking being you avoid the thrust increase to CLB and the requirement to reopen the window and wind the speed back from that commanded by VNAV SPD (VRef+100?)
Thanks!