When certain outcomes are considered “correlated”,then those bets cannot be parlayed together. However, there are times when a same game parlay will be allowed and that information will be available in your Betslip after you’ve added those bets.
Example: You can’t wager on Flyers ML with Flyers +1.5, because if the Flyers win, that means they will automatically cover +1.5 goals. Conversely, you will be able to parlay the Moneyline or puck line with the total of that same game (i.e. Flyers Moneyline + over 5.5 goals scored).