Last activity showing too much activity

I am attaching a screenshot of my winbox i checked this morning.
The last activity is showing too much activity on two radios. Infact i confirmed from the client and being sunday the radios were not even powered on. I disabled their authentication and re-enabled but the radios were truely off( they never connected back).
I have Default Forward unchecked on my 433ah and also unchecked in the Access list for each client.

What could this activity be??
last activity.PNG

Activity is 15.97 and 15.17 hours of inactivity/silence.