It's a mystery to me: LoyceBot often scrapes pages, but it's still stuck at only 14 days logged in. I've tested an auto-refresh in the past on my main account (when someone was checking my online time), and that made my time logged in go up real-time.
Recently, there was a topic about a few users in Bitcoin Forum - Statistics Center, who's "Most Time Online" increases a couple dozen times faster than real-time.