While I don't believe this theory, but I have to admit that William's actor could pass for a younger Ed Harris.

Nah, only one timeline for sure.

Absolutly.
There's hope they subvert this tired trope elegantly.

Maybe, maybe not.
Wouldn't mind either way if done satisfactorily.

Besides being an awesome easter egg, I take this as a confirmation that this is definitly a sequel and not a retelling of Westworld '73.

It's clearly a highly stylized version of the "Wild West" (e.g. no noticeable racism against PoCs), so I'll let the "modern" music slide.
Also, what Bubbles said.

Maybe someone has been tinkering with the techs themselves?

The screen could be some coorporate identity/image thing.
I've seen similar in the employee areas of some big ass firms myself.

They made it clear pretty early that the hosts are programmed to overlook/ignore anything that's outside their programming (modern day objects, guest talk implying the nature of the park, etc.).
Going with the popular theory that most, if not all the personal are hosts themselves, they could be rendered oblivious to…

You seem to be pretty sure the techs actually had a choice, as in free will.

Could very well be, but the writers earned the benefit of doubt by nicely building up so far.
Give 'em a few more weeks for the pay off, I'd say.

Crackpot theory here:
they didn't really have a choice, being host themselves and responding to her voice commands.
Or something.

Well put.

I half expected her to slap him in the face.

For years I was sure there was a second version of You Only Live Twice with Roger Moore starring, because he mentioned filming it in The Cannonball Run.

To make babies cry?
I think you're on to something.

When he gets elected, I would build a wall to the south if I were you.

Nooooooooooohoooohooooooo?

Nah, Maggie and Sasha were always save, since
a) Negan's presumably forbids him to kill women and children directly
b) having a pregnant or black women bludgeoned to death graphically on screen would have crossed the line even for those hacks.

DARKNESS! NO PARENTS!