Account for all that talking? (9,4)

'account for all that talking?' is the definition.
'telephone bill' can be an answer for 'account' (telephone bill is a kind of account). I'm unsure of the remainder of the definition.

'account for all that' is the wordplay.
'account' becomes 'phone bill' (phone bill is a kind of account).
'for' says to put letters next to each other (I've seen this in other clues).
'all that' becomes 'tele' (I can't explain this - if you can you should give a lot more credence to this answer).
'phonebill' after 'tele' is 'TELEPHONE BILL'.

Can you help me to learn more?