Doodle-dee vs doodle-six, local logo confusion

Researcher spotted these two logos which mirror each others doodles. While one is a doodled "d" and the other a doodled "6" and both probably sprung straight from the edges of the designers notes from boring meetings, they pose a problem.

The logo on the left is for Dalhalla, a unique natural arena where concerts are held.* While the one on the right is for a local art event called "the sixth sense". Both of the logos will be used at the same time, in the same region - consumer confusion alert!

Update! a reader suggested that I add the Debian logo to this pairing. So I did.

* edit - I got Dalhalla the music venue mixed up with some local food brand umbrella. Mistake corrected.