Which programs allow husband and wife (or common households) to consolidated points into a single account. Have done a bunch of new CC offers lately and would like to combine the points for ease of use, tracking and to reach tiers. I have my specifics, but please feel free to add more

SPG - I know this can be done with a call
AA - ?
Hilton - ?
Thank You Network - I think this is a no
Amex MR - ?
Delta Skymiles - ?