"...isn't saying that is when the course was complete but when the condition was marked complete for the second course."
But should it? My group uses many courses that are "launching pads" for other courses and have completion settings based solely on the completion of the other courses. Some of these other courses are several years old, so the completion dates of these courses for some users are back in 2017. However, in the "launching pad" course (that includes all the other courses), the course completion date shown in the column for the individual course shows a 2019 date. Based on your explanation, it is "correct". Our group needs the date shown to be the 2017 date.
Is this possible?