Hi, rotondo. Welcome to the board.
Poirot lives in the cold frozen north, and receives her television by satellite. In cold or extremely bad weather, she does not get the over night feed. Then she has to watch the show when it airs at the regular time.
Sometimes, she may not get the show at all even during the day..
If the summary isn't there in the morning, Poirot may be waiting for a friend to send it to her. Then she has to download it, watch it, write it up, etc.
Poirot ALWAYS lets us know if there will be a delay.
We shouldn't bother her with posts unless it is late afternoon on the day the show is airing and we haven't heard anything from her.