Thanks @David – this is very helpful. Part of problem is I don’t know my proper zones for HR for bike I think too. Just looked back at my last CT ride for estimate and Zone 3 looks much lower HR on bike than Zone 3 for run. Maybe time for a real FTP test update that I look at not just power but HR on bike too?
Also, I did just submit for the power plan, so I can have both to remind me of, as you suggested.