So person A buys a jigsaw and sets it up is working on it when able as relaxation.
Person B happens along and says Oh can I help.
Person A agrees (thinking but not saying out loud ‘nice to do something together’)
Person B explains that A ‘always follows the wrong method and their Mum (not present) was great at jigsaws and her method should be used’
…some days later Person B (while A has been at work all week - B only works part time) says oh jigsaw’s almost finished
A says ‘you did my relaxation jigsaw while I was working?’
B says you said I could help, there are still all the green bits to do
Question is: wtf is B thinking?