love em hug em..start your training seperately..use a hallway that blocked at one end to teach sit and stay..an easy lesson can teach both sit..then stay simultaniously..(so?) anyway one at a time..two people can leash train..but seperatly at first, until both dogs know what is expected..then after you have the basics down..you can train together. Maybe the guy that wrote that knows what works for his situation, but you can't take that as a blanket statement for all dogs..my boss WON THE NATIONALS 5 YEARS RUNNING with two siblings..NIP and TUCK..geez i gotta find the pic of that you won't believe the trophy..granted it was in the 30's but hunting test are hunting test and i don't think much changes..it's all the effort you put in..and you can do it if you want to badly enuff.. if there is only you..tie one dog where he can watch the other work..you won't believe how much they learn just watching..we did that all the time at the kennels..in fact there was one kennel way in the back where we started the basics on retreiveing..you would let one dog watch while you worked an expereinced dog..then you had that dog sit and stay as a pick up dog while you brought the newbie out..if the newbie refused the bird, you sent the experienced dog and boy howdy did that ever stir the new one up..most of this is common sense, and you are not teaching hunting but basic obedience would work the same way..there was not an aggressive bone in Mary or sally either one..nor did they ever ignore me..they did ply each other for my attention and i was working with two children, one with a medical condition, the other with scouts..a single parent..if i could make it work so can you..silly ol sally would stay up late waiting for me..she would fall asleep sitting up against my leg..she was such a sweetie.