I’m not an expert here was hoping one of the forum members is. But from yours post to me it looks like its polling the crap out of the fan. I do see 1 transmit failures in yours as well. I have had 2 transmit failures which I then had to remove the device and replace it to get it working again.
From my naive look at the data the number of packets from the hub to my switch should be around the same as the number of packets from the switch to the fan. For me I see an order of magnitude more going from the switch to the fan. Just seems off to me but I’m not a zigbee guy so could be talking out my behind.