Question about 2nd Half Bets

If I bet the moneyline for a second half bet, I am just saying that the team that I am taking the moneyline on will score more points in the second half than the other team. It has nothing to do with the full-game result, is that right?

So if the halftime score is Team A: 30 to Team B: 10.

I take the 2nd half bet of Team B moneyline -300. If the final score is Team A: 30 to Team B: 20, Then my 2nd half moneyline bet would be a winner, is that right?

I just wanted to make sure that moneyline bets placed at halftime are not considered full-game bets because they are moneyline.

Thank you!!