[Vocabulary] When Vs How long ago

[gurpreetgill4u]

Hello,
I would like to know the difference b/w 'when something happened' and 'how long ago something happened' in terms of speaker's perspective?

Is the only difference here is that the former highlights a specific time, whereas the latter answers the duration?

Thank you for your consideration.

 

[GoesStation]

Hello,
I would like to know the difference between [STRIKE]b/w[/STRIKE] 'when something happened' and 'how long ago something happened' in terms of the speaker's perspective. [STRIKE]?[/STRIKE] [You've written a statement, not a question, so it has to end with a period.]

Is the only difference here [STRIKE]is[/STRIKE] that the former highlights a specific time, whereas the latter answers the duration?

Thank you for your consideration.

In many contexts, only one or the other of those phrases would be correct. In others, your interpretation could be correct.