Carpets (at least neither haddoni nor gigangtea) don't really split *per se*. I suspect they might split as a result of trauma. Occasionally (but rarely) they do also bud off or have two mouths. I've never heard of either case amounting to anything though in captivity. In this case you seem to have both budding and two mouths. Very interesting, and I suspect somewhat one of a kind! For now I would not assume it means anything either good or bad, just continue the course and see what comes of it. Maybe you'll grow a new anemone
But equally likely it could just stay that way.
Two weeks is a first milestone. I sort of look at these things as "made it the first week" .. "made it the first two weeks" .. "made it the first month." Very good news!!