Both left and right tackle say Jackson Barton OR Garrett Bolles, so based on that it looks like they are deciding who is right and who is left.
What’s confusing to me is Whitt has said for a few days now that the line is starting to solidify with Bolles, Asiata, Dielman, Uhatafe and TEVI (at rt tackle).
He has also dismissed the validity of the two deep roster to the point he denied it’s existence.