[Klashikari]

That is not possible, again because of Episode 4 red statement that prevents anyone to mistake someone for Kinzo.
No one can consider someone "kinzo" if they aren't. If Natsuhi believed a person X is Kinzo, that is the same as mistaking someone for Kinzo.

This is from this very basis that Battler proved that his perspective isn't reliable, therefore he isn't the detective. By the same premise, it means any screentime for Kinzo cannot be anything but a delusion.

EDIT: Even Dlanor herself couldn't counter Battler's claim, because she first stated like you did: with Knox's 9th commandement, any observer has their own perspective when Battler claimed Kinzo is dead.
Then, he just countered saying it is not possible because of Ep4 red.