Back in the 70’s there was a movie on television where a group of people were abducted by aliens, building (lab and all). They were taken into space but I don’t remember if they arrived at a destination. Along the way, they found several black boxes with a funnel in one side into which they plugged headphones to listen to recordings in the boxes. At another point, several of the people entered another room where an alien came around a corner at them. I remember its mouth was on its stomach area. One woman get the alien some food and it disappeared. Some sort of fear test they assumed.
“The Terrornauts”(1967)?
https://www.imdb.com/title/tt0062355/?ref_=nv_sr_1
Here is the trailer.
https://youtu.be/64fYDxzUR_I