get your wires crossed
US /ɡɛt jʊər waɪərz krɔst/
UK /ɡɛt jʊər waɪərz krɔst/

1.
capirsi male, incrociare i fili
to misunderstand someone or something, especially in communication
:
•
I think we got our wires crossed because I thought you were coming tomorrow, not today.
Credo che ci siamo capiti male perché pensavo venissi domani, non oggi.
•
It seems like we've got our wires crossed about the meeting time.
Sembra che ci siamo capiti male riguardo all'orario della riunione.