It's not welcome when it's cold though it might be a handy way to impart information (9,4)

'information' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Maybe there's an association between them I don't understand?

'it's not welcome when it's cold though it might be a handy way to impart' is the wordplay.
I cannot really see how this works, but
'not' could be 'o' (I've seen this in other clues) and 'o' is found within the answer.
'when' could be 'e' (I've seen this in other clues) and 'e' is present in the answer.
'cold' could be 'c' (eg on taps) and 'c' is found in the answer.
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is found within the answer.
'a' is within the answer.
'way' could be 'n' (Compass direction - North) and 'n' is present in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?