link channel - dont work at timeline windows

when i choose 2 channels (or more) and link them with link on the mixer ,
when i choose one of them the other is automatic choose too .
so i mark one channel the other mark too
but if i go to the timeline windows ( the main window) and i choose there the channel i linked
the other isnt choose with him .
why is this ?
its complicated to recored multi channel in the main window if i need all time to choose each one separately.
who can help me solve this strange case .