Ok many thankQs; your and G_W’s explanations and following pix clear it up.
0 and Trump’s oval office windows have the top one out and the bottom one in.
biden’s oval office windows have the top one in and the bottom one out.
Residential convention for double-hung windows has the inside sash normally the bottom sash unless the owner changes them.
This makes inserting a pre-manufactured, double-hung sash set, easier.
However, this will alter the insulating properties as the rails will not line-up and seal properly.