Passed on content from revolutionary walkie-talkies (4)

I believe the answer is:

late

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'passed on' is the definition.
(both can mean dead)

'from revolutionary walkie-talkies' is the wordplay.
'revolutionary' shows that the letters should be reversed in order.
'from' indicates the answer is hidden within the clue.
'etal' can be found hidden inside 'walkie talkies'.
'etal' reversed gives 'LATE'.

'content' acts as a link.
I am not very happy about this link. It may be part of another bit of the clue.

Can you help me to learn more?

(Other definitions for late that I've seen before include "Dead or dilatory" , "Former, delayed" , "after the sell-by date?" , "Behind schedule" , "Previous" .)

I've seen this clue in the Irish Times.

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