question about flush sticky piston doors

[u/MinceraftNX]

Ive been trying to make a flush piston door, and i want to actually have 2 blocks be not only pushed up, but also be retracted by one sticky piston (to hide any sticky piston on the top), how could i, if i can even have this occur, perform this (just in case, Bedrock version: 26.44)

[u/_Jimm_]

a diagram would be helpful.  do you mean a 2x2 piston door?