Genetically, there's no connexion closer than the Indo-European level. Germanic and Celtic aren't especially close to each other linguistically despite their physical neighbouring.

I can't hear any similarity in the phonetics. The consonants are quite different; Norwegian has a complex vowel system, and is tonal.

Although the Vikings did settle in Ireland, and in northern British England (Cumbria), where something akin to Welsh would have been spoken, I'm not aware that Norse languages had any impact on the Celtic ones. Whereas the Norse influence on English was significant (sky, skirt, they, etc.).