i think it's possible and i'd be willing to say that it it even happening right now... when kurama powered down and decided to gather more chalkra he said to naruto that he was going to CREATE and REPLENISH chalkra... he didn't "MY" chalkra as in his or "YOUR" chalkra as in naruto's just "creat" and 'replenish" chalkra in general... and then a while ago somebody pointed out that he was sitting just as naruto does when he starts to gather nature energy/chalkra... so my guess and belief is that he can gather and store nature chalkra just as he can his own.. and when he said to naruto in the latest manga was that he modified the chalkra... so i'm guessing and suggesting that he combine either his and nature or his and naruto's or all 3 of them cuz we know that he also has access to naruto's chalkra as well... and i say naruto's as well cuz when people were noticing the power they were sensing naruto's chalkra so i think all three chalkra's are powering naruto right now... it's like they were confused as to which was which...
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