I know this is almost certainly a stupid thing to ask, but I think it's better safe than sorry. While I know there's no way for N*L to see these boxes on their network but is there any increased danger in daisy chaining one with an official N*L box (so having the cable coming from the wall to the N*L box, and from the N*L box to the starview)? Or would it even be an issue to have both boxes running alongside each other in such a manner at the same time? Again, just being safe rather than sorry!
There is no way for N*L to remotely see if you have a box connected barring actually coming to your house and checking. I wouldn't worry , there is no increased danger of detection. However <insert legal disclaimer> IT IS YOUR RESPONSIBILITY TO ENSURE YOU ARE COMPLYING WITH IRISH AND EU LAW. IT IS ILLEGAL TO RECEIVE SUBSCRIPTION-BASED TELEVISION AIRTIME WITHOUT PAYING FOR IT. IT IS ILLEGAL TO CONNECT THIS ITEM TO EQUIPMENT THAT YOU DO NOT OWN, WITHOUT THE EQUIPMENT OWNERS' PRIOR CONSENT. have fun