Crossword Genius

Zip-line at resort? That’s beside the point (10)

Ross

I believe the answer is:

tangential

I'm a little stuck... Click here to teach me more about this clue!

'beside the point' is the definition.
I can't tell whether this definition defines the answer.

'zip-line at resort?' is the wordplay.
'zip' becomes 'tang' (I've seen this in another clue).
'resort?' indicates an anagram (I've seen 'resort' mean this).
'line'+'at'='lineat'
'lineat' with letters rearranged gives 'ential'.
'tang'+'ential'='TANGENTIAL'

'that's' is the link.

Can you help me to learn more?

(Other definitions for tangential that I've seen before include "Peripheral" , "Irrelevant" .)

I've seen this clue in the Sydney Morning Herald.
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