GPR and GPA for L/R balance

Hey all!

Is it possible to get the Gross Power Released (GPR), Gross Power Absorbed (GPA) for each leg, with their respective L/R balance values, like in WKO?
See:

I suspect this may be possible with custom streams in Intervals?

I have the Garmin RS200 pedals, which is a dual sided power meter, and I also get the smoothness and effectiveness values. However it looks like the power value stored in the fit file is the combined power output. But perhaps I can recover the power for each leg by looking at the L/R balance for the combined power output, and the calculate the GPR, GPA etc. from that.

Thanks for the help!

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