https://wiki.openstreetmap.org/wiki/Tag:tunnel%3Dbuilding_passage

"The layer should be the same as the layer of the building, with the exception when several tunnels are passing on different levels. So if the building doesn't have a layer tag, the way should not have one either."

https://www.openstreetmap.org/way/817657559
https://www.openstreetmap.org/way/817657561
