Accessing both the cameras separately on a Sync Stereo HAT

Hi,

I was wondering if I could get the feed of both the cameras separately to perform some image processing operations. Right now I followed whatever was there in the github regarding MIPI and got everything working. Occasionally I am facing write failed error for i2cset commands.
How can I get full field of view of both the cameras in separate windows instead of getting both in a single window?

Thanks.