Well, I have a sentence that confuses me a little bit because I don't know which tense would be the best in this case.
Here's the sentence:
When I woke up I realized that I had overslept. As it turned out my alarm didn't go off.
Or the same sentence but with the Past Perfect.
When I woke up I realized that I had overslept. As it turned out my alarm hadn't gone off.
I know that we use the Past Perfect when we want to indicate that an event took place before another event in the past. But wouldn't that be correct to use Past Simple in this case? At least in conversation?