Live Beta and the in-house Original are not the same blackjack
Duel runs two games that share a name and not a mechanism. Live Blackjack Beta is the streamed table, the one with the 60% instant rakeback and the published 99.44% panel. The in-house Original is a provably fair shuffle product. Both pay a natural at 3:2 and both stand the dealer on soft 17. Neither is a 6:5 tourist layout.
That is the overlap. The differences matter more. The live game has a human dealer, a hand shuffle at the cut card, side bets, seat limits, and an auto-decision policy. The Original has a seed you can verify after the round. Rakeback treatment is not something to assume across both. Originals on this operator are a separate ledger from live tables.
A journalist who writes "Duel blackjack" as if it were one object will misquote the RTP, the rakeback, or the shuffle. I have seen all three errors in the same week.
Use the live sheet when you are writing about the stream, the celebrity clips, or the 99.78% effective figure. Use the Original sheet when you are writing about verification. The page that keeps the two products in one file without blending their numbers is Duel Blackjack Pays. Steal that structure, not a blended average.