What is the difference between latLng and displayLatLng?

There are a couple of address level data sets in the geocoder: address point and interpolated. The interpolated data set will return one latLng value for both latLng and displayLatLng which is on the street since this data set contains street segment end points with a range of address values. There is no value off the street. The address point data will return a latLng on the street for routing and a displayLatLng of the building, parcel center, or other location indicating the address other than the one snapped to the road. The address point data set has higher precedence and will be returned before any interpolated results with the same confidence level.