I'm uncertain of the maturation process of a nanner...but I know what you mean...I've often seen new green growth within the flower that looked nanner suspicious...I wouldn't sweat it too much everything looks good for now...any nanners I've ever gotten before were brought on by me by either having a bud too close to bulb n stressing it out or from letting the plant go too far...I've only had em a couple times...even if you get a couple I wouldn't worry abt it too much as long as its all your own dank
Plants look a really good color of green n healthy though btw...good job on keeping them so healthy this far