I read that the Director confirmed it but he also said that it's not official.
You can read about it here:
link

XD Tarzan's era is pretty far from Frozen's. So it is kind of weak for a believable theory.

God...Why do they have to tie everything to Frozen? Just stop already. Frozen never made sense to me in the first place, and all of this external theory nonsense doesn't improve the movie in my eyes, either.

NO.
Too many inconsistencies. C'mon, the ship sank, then...burnt? The parents of Anna/Elsa look completely different from Tarzan's, it's obvious they have different cultures, the list goes on.

Hell no!!

Uhhhhhhhhhh

No.

Just no.

Of course not... Frozen is somewhere between 1810-1840, I think, and Tarzan is 1880-1910?

I know. It doesn't make any sense to me. The time and the Incidents does not match at all. People just like to tie up everything with Frozen I suppose.

What a nonsense theory! Anna and Elsa's parents and Tarzan's parents are different, how can the fans made the forced theory like this?!

this one is just flat out dumb. AGDAR AND IDUN LOOK ABSOLUTELY NOTHING LIKE HIS PARENTS.

people reach way too far just so they can fit one disney movie into the universe of another.

eh..can't find any connection

it can never be that tarzan is there brother! It just does not make sence!

This is impossible!!!

Disney fan theories are always stupid.