----But it can't be avoided--for to look up to the ceiling, in that case the two chins unavoidably meet----and to look down into each other's lap, the foreheads come to immediate contact, which at once puts an end to the conference ----I mean to the sentimental part of it. 
But it can't be avoided - for if they look up to the ceiling, the two chins unavoidably meet - and if they look down into each other's lap, the foreheads contact, which at once puts an end to the sentimental part of the conference. 