Simple cure. DO NOT start the after start checklist until you have watched the tug, tow bar, man and pin clear the aircraft and safely cross "over the line" back into stand area. Verbalise it for the benefit of your colleague and the CVR. The taxi way is then yours and unobstructed - the after starts can then be done in the knowledge there's no-one or any equipment close to the aircraft.....because you weren't heads down doing checks when you need to be heads up watching the ground crew and equipment clear the aircraft. That's worked for 20+ years for me............
A4