I have an update, and hopefully, a fix the for this problem.
I did a chat session with a Samsung agent who was little help so I escalated to a supervisor, and we delved a little deeper.
What this person had me do was change the Text to Speech setting in the ACCESSIBILITY options from Samsung to Google.
Apparently this is a new feature since the last software update.
After I did that, the problem seems to have stopped. I have left the phone turned on, and untouched for several hours at a time now without hearing the random talking.
I hope this helps you as well. I would be interested to know so if you would report back here with your results that would be really helfpful. Thanks and good luck!