I don't think that you are getting my point that the guests could be struggling with a weak signal because their device refused to let go if it in favour of a much stronger signal which they could switch to if it had a different SSID but can't if it has the same as the weak signal.
The passwords can be the same for the different SSIDs
@licquoricewrote:I don't think that you are getting my point that the guests could be struggling with a weak signal because their device refused to let go if it in favour of a much stronger signal which they could switch to if it had a different SSID but can't if it has the same as the weak signal.
The passwords can be the same for the different SSIDs
Just a quick update for future reference I have tried setting the SSID and password on the TP-Link outdoor Wi-fi to the same as the BT Whole Home Wi-fi also made sure that the security was set to WPA2 which is the same as the Whole Home Security and it works , the indoor and outdoor Wi-fi is on the same network with the same SSID and passsword with no need to manually change Wi-fi networks, if I go inside both my Android phone and Apple iPad switch between the Tp link and the BT Whole Home without having to drop the network and reconnect.
So I now have one SSID that covers the whole of the property both inside and out, just as I wanted, definitely not a myth @licquorice.
You may not be aware of it happening, but I can assure you the network will drop and reconnect when changing from the mesh part of the network to the TP Link, just as it would with different SSIDs. You don't NEED to manually change networks with different SSIDs but the ability is there if you want to.
However, pleased to hear that it is all working as you want it to.