From memory Pi hole works on DNS queries so it seems that all the queries are coming from the orbi router rather than your computers directly. DNS settings for Orbi clients - NETGEAR Communities confirms that and says there is no way to get orbi to send your preferred dns settings (i.e. the pi-hole) to each computer directly.
To fix that you will need to change the DNS settings to point at the pi-hole on each individual computer because it seems orbi are trying to be clever and failing badly.
When I next update by network the orbi system I currently have will be replaced rather than upgraded.
Hmm - what about if I add the Pi Hole to the Orbi so it is part of the 198.168.* network instead of the 192.168.0.* network
Ah - reading the link provided it looks like that will not help.Devices will still resolve with Orbi and Orbi will resolve with Pi Hole
From memory Pi hole works on DNS queries so it seems that all the queries are coming from the orbi router rather than your computers directly. DNS settings for Orbi clients - NETGEAR Communities confirms that and says there is no way to get orbi to set your preferred dns settings (i.e. the pi-hole) in the DHCP it sends on each computer release renewal.
To fix that you will need to change the DNS settings to point at the pi-hole on each individual computer.
When I next update by network the orbi system I currently have will be replaced rather than upgraded - it's not the sought of thing you expect to be an issue in this day and age and I have the pro (Business) version of the orbi...