Something people might miss
What people might miss without thinking, is when Andy and his mum meet the daughter and son of her Ex she named Andy after, is the daughter was named Joyce after Andy's mum, thats why they give that awkward look of surprise at each other, because it shows, that after Joyce and Andrew split up(bare with me), they both had so much love for each other, they named kids after 1 another.
before anyone mentions it, yes i know Andy(Andrew) and Andrew's son Andrew, were both named after Andrew, hence the confusion at the house.