lol if he can handle bee , naruto, and itachie he can handle thoee 2. guy only uses taijutsu he has to get close to attack nagato uses asura path and he is dead and kakashi chakra shortage is his down fall.It depends if it is a fight to the death guy will go eight gate which den he powers easily srpasses that of a kage as staed in part 1 he will(nagto) far oyutclassed by guys speed and since kakashi has experienced his ability he can come up with something y votes goes to the duo rival eight gates of heaven + m.s too much for nagaoto
just Kakashi , guy is NoTHing!
Sorry but kakashi and gai dont have a chance,just because Gai uses taijutsus doesn't mean anything to Nagato because he can still grab Gai and suck out his chakra like pain did to sage mode Naruto and turning to stone from the natural chakra and what he did to bee. Plus Nagato can suck up their souls if he gets near them. Gai can do ninjutsus too but doesnt really do it because the only time he uses it is when he summons or disspells genjutsus ( lee cant do that lol). Nagato is both close combat and range combat just like kakashi is but more effective. Maybe if kakashi opened 7 gates then with all of that chakra use kamui while Gai is distracting Nagato ( as long as Nagato doesn't have his summons out for extra eyes. Also even if Gai goes 8 gates all Nagato have to do is pull him in and absorb all of his chakra killing him.Hear me out there fighting and if Nagato used chibaku tensei Kakashi could counter with kamui. Nagato can absorb chakra but guy only uses taijutsu. Nagato has his push pull thing but Kakashi knows the interval and with guys speed they can get around it. I think they have a chance of winning