How do I know a specific location of a nested and cut video in the primary timeline

Scenario: 

I have a couple of cutted videos, they are all nested..

I have an instruction from my manager to cut a specific part (For example: from 5:22 minutes to 6:22)

I added a lot of extra media such as intro video and other stuff, so 5:22 isn't the same for me anymore.. 

I have to go into the nested video and check what is the original 5:22 - 6:22 part

The question:

How can I go to that nested video and mark 5:22 - 6:22 part and see where it is exactly on the whole timeline project?