Yes, I agree, that would be data saturation. Further, data analysis of the initial interview may leads us to potential data that we could have missed, because new questions may "emerge" or may be thought of. I also wish to add on that there are other forms saturation: theoretical saturation. Some also talk about variation saturation. The following youtube may add on to the clarity. https://www.youtube.com/watch?v=TnnhU9uy4uQ