It is all a matter of degree, of course, and much may depend on what communications have in fact passed between the persons concerned.

Typically all letters or communications would pass through the black room before being passed to the recipient.

Their eyes brushed and held, and in those few seconds a silent communication passed between them.

All the airlines maintain a record of complaints by type, so however they may be addressed, communications pass through the consumer affairs department.

He nodded, and an unspoken communication passed between them.

They gazed at each other, as if some silent communication were passing between them.

Though he couldn't have known her language, communication passed easily enough between them.

The chief engineer looked back, and a wordless communication passed between them.

Within the prison itself, communication and ideas passed.

Mark got the impression that some communication passed between them.