Your points are well taken. I still see that first letter as a P, though. To me it reads:
Prs > BB > D-- (could be DNI - Director National Intelligence?)
I think what looks like the tail of a Q is where Biden first put the pen to draw the underline. He pulled the pen down to the right and then across.
But who knows. It's really almost a guessing game without better imaging software.
I'm looking at the pen strokes and location of pressure used to create the letters. Notice the letter P in People and the letter Q in Alq. He uses one stroke to create his Ps and two strokes for the Qs. The leg on the Qs are centered on the O while on the Ps, they are more to the left. Based on this, I think the first letter is a Q in the BB notes because it is written the same way as in Alq.
I can't believe I'm minding Biden's Ps and Qs. LOL