Manx-Sicilian connection?

Factual Questions
#1

Have you ever seen the flags of Sicily and the Isle of Mann?

http://en.wikipedia.org/wiki/Image:Flag_of_Sicily.svg

http://en.wikipedia.org/wiki/Image:Flag_of_the_Isle_of_Man.svg

They are strangely similar. Does anyone know what the three legs mean, and if there is a connection between the two regions?

#2

Here’s some info on the triskelion. I don’t know if there’s a connection, other than that it’s an ancient symbol.

#3

This Australian site suggests separate origins for the Sicilian and Manx triskelia. Another site (Wikipedia?) mentions that it was once a symbol for Brittany, adding yet another question to the mix.

#4

Did the ancient greeks have contact with the ancient celts, perhaps?

#5

They did have contact (and sometimes pretty rough contacts) with the Celts, though I’ve no reason to assume the triskel has anything to do with this.