Is there a 2x2 method in which you solve a face while doing OLL, and than do PBL? If so please tell me. Thank you
Sorry to say, but nothing like that exists. The only closest thing that kind of? does that is Guimond.
In Guimond if you predict your seperation then you can get two opposite faces in ~7 moves, one-looked in inspection, and then you end your solve with PBL. Although this probably isn't exactly what you're thinking.
Here's some examples of doing both faces at once then ending with PBL-
Scramble: F U R' F2 U R' F' R' U2
R' U' R U2 R' U2 R2 // Both Faces
D' R2 U' B2 U2 R2 U' R2 U2 // PBL
Scramble: F' U' R' F R' U R U' R
U R' U R' // Both Faces
D' L D' L F2 L' D L' // PBL
Is this the general idea you have? I'm still not quite sure.