It's always hard training two puppies of the same age at the same time. I think it's called 'litter mate syndrome ' I may be wrong though.
I do the same as a poster further up thread. Finger to lips and a shush quiet command, as soon as they are quiet I throw a toy for them or have a game of tug.
So long as they are not out there on their own, barking their heads off I can't see the problem.
Richard Osman and his House of Games
Wedding Present Dinner Service.
Sudden pain in back of leg behind knee
My daughter is lying about me and editing me out of her life.
anyway I found them very helpful.