Have a blackjack probability question. What are the odds of hitting a red flex side bet (dealer hits 5 red cards in a row) 2 hands in a row?

Sat down at a blackjack table and two hands in a row hit the red flex side bet where the dealer had two red cards and had to hit and pulled an additional 3 red cards. Payout was 50-1 each time. What are the odds of this happening twice in a row. 6 deck shoe.