thy have multiple rings on the same plane, tere's just gaps between them. it has to do with the gravametric pull that all the debree will fall in a set plane, but that does not mean they have to be in the same ring, so there are concentric series of rings around our planets with them.
2 rings on 2 completely different planes is very much impossible, it would mea the planet has 2 grametric planes that are in contrast to each other. if that was the case, the debree would not have consolidated into rings, it would be in constant flux between the two pulls.