Why would he have skipped it anyway? I don't really understand the case

@AA Sounds like someone who doesn't normally pray, but in this instance they forgot about the previous praying opportunity, and now they want to pray. Once, or twice?

@robev how do you forget to do something you weren't planning on doing? If I don't eat ham for lunch today, it's not because I forgot to eat it.

@AA What does it matter? Let’s say for the sake of the question that he would have skipped anyway because he was in an important business meeting that he didn’t want to miss.

I think @AA is asking what did they forget then. They forgot to skip it? That's not called forgetting to pray...

@LoAni so he has an important business meeting all afternoon, decides to skip praying, goes to his meeting, and goes home afterwards. Where did he forget anything?

@robev @AA he woke up in the morning and said "Im going to skip micha today because i habe a long business meeting that i dont want to miss". By the time he is able to daven mincha, he had forgotten about mincha completely. By maariv, he remembered again. Also, doesnt habe to be that he forgot. It can be any tyoe of onus.