Towards the end of the episode when Andy and Ephram arrive home from their camping trip they both plonk down on the couch, exhausted (and no doubt smelly) and Andy takes the shoes off his aching feet. At the end of their conversation you hear a motorbike pull up outside and they both turn to the window acknowledging that Delia and Edna have arrived. Cut to outside where Delia and Edna have a 1 or 2 min conversation until Andy walks out to meet them. When Andy comes outside he has showered and changed into a clean outfit, shoes back on and everything.