The other way is to check postcode centroids, they often show whether bits belong to the same or different streets. This shows adjacent open data with with "E9 5" postcode sector https://osm-nottingham.org.uk/?z=17&lon=-0.02715&lat=51.54585&bgl=OSM,1,15&s=e9%205&st=SearchOpendataJson&uc=1