hi, im submitting in december and out of my 2 supervisors, my 1st supports me and my second supports me but mostly because my first says so...

what i'd like to know, before submitting and going to the viva, should i work on making it clear to them (and anyone else?) that they have agreed my work is good etc. in order to avoid "surprises"?

is there any other diplomacy i should follow to be sure everything will go smoothly?

im in business/management. thanks!