The have the same hair colour and both have sideburns. Maybe Hans is a prince, and the Stabbington brothers are theives, but then again the S. brothers could of been demoted, or they left because of the long wait for the throne. Do you think this is true? (they are both evil too btw.)
Frozen and Tangled are set in the same universe, so they could be related
Technically, all the DP films are set in the same universe (Prince Eric is implied to be a descendant of Aurora and Phillip in TLM, and the King and Duke from Cinderella briefly cameo during the wedding).
But Tangled and Frozen are set in different centuries. I think Frozen is about 50 years (I'm not sure) more "recent" than Tangled.
Except Rapunzel and Eugene explicitly cameo in the latter film and haven't aged a day. And not only that, but unlike a similar cameo by Belle in Hunchback, the cameo was actually acknowledged as canon in the artbook.