Gave way after reply, periodically getting jostled (7)
I believe the answer is:
elbowed
'jostled' is the definition.
(elbowing is a kind of jostling)
'gave way after reply periodically' is the wordplay.
'gave way' becomes 'bowed' (I can't explain this - if you can you should believe this answer much more).
'after' is a charade indicator (letters next to each other).
'periodically' means one should take alternating letters (letters must be selected 'every so often').
The alternate letters of 'reply' are 'el'.
'bowed' after 'el' is 'ELBOWED'.
'getting' is the link.
Can you help me to learn more?
(Other definitions for elbowed that I've seen before include "Jostled" , "Pushed (someone aside)" .)