Refurbished GW6 44mm takes 2h+ to charge from 10 to 100%

Is this normal? I thought in total charging time is around 1h10mins.

First regular use cycle (after all the updates and installing) gave me 28h of moderate use (wifi auto, aod off, raise to wake on, sleep tracking at night, HR every 10mins, NFC off, location off, no calls, maybe 50 notifications) which seems normal to me, so I'm confused why charging takes so long...

Any advice? TIA!