How to jump to next 'parent' comment?

Example:

POST!

Comment 1 53 replies Comment 2 364 replies Comment 3

etc..

How, when say, scrolling through comment 2's replies, does one jump to the next 'main' comment/reply (e.g. jump straight to the next one, comment 3).

Also, obviously I got the terminology wrong and would welcome corrections so I can make myself more clear in the future. Thank you.