Which definition is better?

English as a Second Language English Vocabulary, Grammar and Idioms
1

Hi teachers,
Which one is better?
a) How long ago introduces questions about a specific point in the past in which something happened (occurred).
b) How long ago introduces questions about how much time has passed since something happened, up to the time of asking.

Thanks in advance.

2

It depends on the question.

3

Hi Beeesneees,
So, both could be right. I never thought about that.

RtL

4

Hi Beeesneees,
Could you write two questions where I can differenciate them, please?

RtL