twinkie13
In transit, arriving late.
I just did this and others have posted ways here…Oh sorry I misunderstood.
Any time you have a parlay where the last leg is heavily influenced by the first leg its correlated. You could wait until GB wins to bet Detroit but you can be sure that the Lions won't be available at -180 if that happens. By parlaying it now, you are essentially getting ahead of the number. That's why Pinny won't allow it. Many other books will though.
I'm sure there's a better way to explain this mathematically but I'm not the guy for that.