Crossword Genius

Charlie, going further back, becoming more distant (6)

Ross

I believe the answer is:

colder

'more distant' is the definition.
('cold' can be similar in meaning to 'distant')

'charlie going further back' is the wordplay.
'charlie' becomes 'C' (phonetic alphabet: alpha, bravo, charlie etc.).
'going further back' becomes 'older' (further back in time).
'c'+'older'='COLDER'

'becoming' acts as a link.

(Other definitions for colder that I've seen before include "Less warm" , "Of a lower temperature" , "Not so hot" , "More nippy" .)

I've seen this clue in The Times.
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