Unsolved Murders of Gayle Sorensen & Mary Crupper

Gayle Sorensen leaves work on February 11 1977 in Hutchinson, Kansas to make a bank deposit & run some errands. Her body is found a few days later. Mary Crupper runs to a local market on September 8 1979 to pick up a few items for dinner her body is found a few days later. In both cases the women are last seen with a man with brown hair & glasses. Were these cases related? Was a man stalking women in grocery stores? There are many facets of these cases that feel eerily similar. What do you think? https://uncovered.com/cases/mary-crupper-wichita-ks https://uncovered.com/cases/gayle-sorensen