ESC current telemetry in OSD not equal to total current?

I have a mini quad with a Kakute F7 and Tekko32 4-in-1 ESCs. ESC telemetry is configured and displaying temp, rpm and current on the OSD.

What is the OSD current value? The displayed current is approximately a quarter of the actual total current as recorded in the dataflash log. It fluctuates rapidly so I’m guessing it’s the instantaneous current draw reported by each motor as the telemetry cycles through the ESCs.

IMO a more useful OSD field while flying would be the total current draw.