Another Bamf Chapter again! Damn Kishi is on point!
Ok now for analysis:
1)
Shikamaru. . . .Is obviously faking. He already said that he wasn't scared of Kazu so why is he pretending like he can't fight and falling to his knees? (tayuya flashback anyone?) PLUS the entire battle field is his trap. He hasn't so much as blinked about the trap field he laid out yet. Shika has already established that he thinks 200 moves ahead, AND he doesn't make the same mistake twice, so I think that Hidan is in some deep shit.
2)
Kakuzu. . . .is super freaky
. From the way his body went limp when the heart was destroyed, it looks like the hearts are realy capable of separating from his body and being independent. Here's my supporting evidence
a. When he had his heart punctured by kakashi's rasengan he got right back up
b. When he removes body parts his hearts can move inside his body like when his arm had a heart inside to reatach his hand
c. The Lightning mask was destroyed even thou the heart that was attacked was in Kakuzu's main body. This is shown to happen AFTER kakuzu absorbs it's heart into his own body.