Oh...and if you're handflying it all works the same way...you just ask for FLCH etc etc and your buddy does it for you...but between talking on the radio and multiple button pushing, alt sel/hdg bug changing, flap/gear selections etc it gets REALLY busy for the PNF while you just follow the FD (while also looking 'through it' to ensure it is actually taking you somehwere you want to go) Hence the preferred technique, by many, of staying coupled until the chances of a GA are bordering on nil.