Subliminal Talk

Right now I'm listening to 2 different subliminals. I'm wondering if I should alternate between the 2 while playing like:
1,2,1,2,1,2,

or play them for a set amount of time like:
1 - 4 hours
2 - 8 hours

Thanks in advance for your response.

Presuming they are two that you can play together, you are best to play out each one and then switch. as in the second option.