When he got back to the fire, he looked like one of the real firemen, so nobody noticed him or questioned him as he slipped right past the real men, walked right into the house, and retrieved the incriminating object.
He looked like one of the real firemen. He got back to the fire. Nobody noticed him. As he slipped right past the real men. This was what nobody questioned him. Nobody walked right into the house. Nobody retrieved the incriminating object.