Crossword Genius

Large amount of data about a talk (3)

Ross

I believe the answer is:

gab

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

'a talk' is the definition.
(I've seen this in another clue)

'large amount of data' is the wordplay.
I cannot quite understand how this works, but
'amount' could be 'ab' (Ab is an example) and 'ab' is located in the answer.
A single letter 'g' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...

'about' acts as a link.

Can you help me to learn more?

(Other definitions for gab that I've seen before include "gossip" , "Talk, chatter (colloq.)" , "Loquacity the gift of it" , "The gift of the . . . is ability to talk fluently" , "Talk a lot" .)

I've seen this clue in The Independent.
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