The most these two wealthy showbiz fellows can summon in his presence is the idea that maybe one of them should have given the guy a tip.

Clooney comes out onstage, he and Letterman sit down in chairs, Clooney does the obligatory joke about Letterman’s beard, referring to “this Soggy Bottom Boys thing you’ve got going,” and they ramble on the subject of Clooney’s childhood, with a fair amount of Letterman’s childhood thrown into the bargain.

It’s nothing you haven’t heard if you’ve ever seen Clooney profiled, or read a Letterman interview, but here’s the thing: To each other, this is all new material, because Clooney and Letterman live inside their separate fame bubbles, so Letterman’s never heard the Clooney stories about all the bad TV acting gigs he had before “ER” made him a star, and Clooney hasn’t heard Letterman talk about how his mom was emotionally withholding.

Basically, watching all this on Netflix, you’re waiting for them to get these niceties out of the way to dig down a bit deeper.

There, his dad, former broadcaster Nick Clooney, introduces Letterman to Hazim Avdal, whose chyron reads, “Iraqi refugee sponsored by the Clooneys.” Yes, the elder Clooneys have taken in a nice young man at the bidding of George and Amal, who works with people whose families have been affected by genocidal war.

It’s a pleasant enough interlude — until they’re all walking down a leafy Kentucky street chatting and Letterman mock-yells at a guy riding on lawn mower.

Again: rich and powerful person meets ordinary citizen as alien presence.