Discussed the toss? (6)
I believe the answer is:
argued
'discussed the toss?' is the definition.
The answer and definition can be both to do with communicating as well as being past participle verbs.
Maybe there's an association between them I don't understand?
This is all the clue.
Can you help me to learn more?
(Other definitions for argued that I've seen before include "Bickered" , "Wrangled" , "Rag due (anag.)" , "Quarrelled or debated" , "Disputed - . . . . . . the toss" .)