Run VO2 Max updating from Cycling

I’ve not ran since Jan 22nd and been indoor cycling exclusively on Zwift using wahoo kickr + Polar H10. Power meter and Hr are both connected to my Fenix 6 and I’m recording every session in the watch  

Garmin connect is showing my running VO2 max dated back to my last run, however on the fenix 6 the running VO2 max is being updated in parallel to the cycling VO2 max.

Has anyone else noted this before I.e. running VO2 being updated by cycling activities? 

Thanks in advance