They are simply added one to the other and sent through the real channel.
We don't have a lot of time to go through normal channels.
In fact, those people are why I cannot move through normal channels.
A boat was coming through a channel from the Sound.
I'd like a little light to get through the channel, and then it doesn't matter.
The more I can do through established channels, the better.
"Only then will we be able to make progress through political channels."
"Right, but only after we went back through other channels."
"Let's just say I'm working on the problem through a back channel and leave it at that."
And if you want to change them, then do so through the appropriate channels.