VO2 Max - does rowing machine contribute?

Hi all

I have a Concept 2 indoor rower with PM5.  I do not run or use a bike with a power meter.

I noticed today a VO2 Max reading with "Wednesday" on it, on my Fenix 6 pro. On Wednesday I did a row.  On the app I see my VO2 Max has been registering since I got the watch in July.

Does this mean that the rowing is contributing to a VO2 Max reading?  I thought it was only running or cycling with a power meter that contrubuted to a VO2 Max reading.

thanks