Is R6900P router the same as TENDA router on Nighthawk app?

I have the netgear R6900P router, and recently had an issue while i was away where the app stated my router was offline and affected my wifi.  On my list of devices that are connected to the router I see TENDA router under my 2.4g listings.  Is TENDA another name for a netgear device somehow?  I have no idea how or when it was added and rebooting the router did not remove it.  I cannot remove it from the list of devices.  I have it blocked, and haven't found anything that might be affected yet.  Can anyone verify for me?