BDL had a lower relative humidity all afternoon than ORH. It was more arid despite higher dews.
Since temps decrease faster than the dew with height, they become closer together and the RH increases with height.
You are confusing RH with dew points.
BDL at 90/72 is 56% RH (more arid).
ORH at 82/68 is 62% (not as arid).