Who is older, Celts or Vikings?

Celts are older than Vikings by more than a thousand years, with distinct historical timelines. Celts were ancient Indo-European people who emerged in Central Europe around 1200 BC during Bronze Age, with Hallstatt culture around 1200 to 500 BC and La Tene culture around 450 BC to 1 AD, spreading across much of Europe including British Isles, France, Spain, and Anatolia. Celts were in Britain from around 600 BC, long before Romans, and are ancestors of modern Scottish, Irish, Welsh, and Cornish peoples, with Celtic languages and culture. Vikings were Norse seafarers from Scandinavia, Denmark, Norway, Sweden, who emerged much later during Viking Age from about 793 AD to 1066 AD, starting with raid on Lindisfarne in North East England in 793 AD. Vikings are descendants of Germanic peoples, not Celts, though they interacted. So Celts are older by about 2000 years, with Celtic culture flourishing when Vikings did not yet exist as distinct group. In Carlisle context, Celts were there first as Britons, then Romans, then Celts again, then Vikings arrived later raiding. So Celts predate Vikings significantly, with Celtic Iron Age starting around 800 BC versus Viking Age starting 793 AD, making Celts about 1500 to 2000 years older as cultural group.