Not the right pollinator for Cynoches?

[Connie Star]

I have a Cynoches here in Costa Rica that I bought recently in bud and it has bloomed exuberantly, with presumably male flowers. It is supposed to be pollinated by euglossine bees, but my husband photographed these 2 bees hovering over it that were very large (inch or so) landing on it. They are clearly not euglossine bees as they are too big. They also didn't appear to be going for the pollinia. Does anybody know more about this? I've never seen it in the US and I imagine it's not grown by a lot of people.