“Buried” took an incredibly tense moment at the end of last week’s episode and let it go without much of an explanation. (Did Hank just push the garage door button and let him leave in silence?)
I don't think this scene was left as abruptly as you suspect.
Breaking Bad has a history of adapting movie-level cinematography and camera use to television. It also has a history of nodding to its inspirations. "Buried" did both right at the beginning and it was fantastic.
Yes, the overhead shot of Jesse having the world spinning out of from under him in the cold open was interestingly shot, but for my money the best cinematographic scene in this episode has to be right after the opening credits when Walt leaves Hank's garage.
There's a tight shot of Walt exiting. He turns around, and we see Hank, his new nemesis, over his shoulder. Both men have their hands at their sides as Hank squares up with Walt a driveway between them. Back to Walt eyeballing Hank, the shot over Hank's shoulder this time. Then a shot from the ground up at Hank eyeballing Walt. Hank's left hand twitches. Same shot mirrored at Walt who wriggles his left hand. Back to Hank. Only this time the shot is behind his right hand with Walt at the bottom of the driveway. Hank draws and shoots; the garage door closes. Again the shot is mirrored from Walt's perspective – his left hand at his side and Hank twenty paces away.
Every shot in this vignette was a perfect replication of the classic high noon shootouts of Old West movies. The only thing missing (and only just) were tight shots of the shooters' eyes and them chewing a toothpick or cigarette. Hell, even the whirring yellow car in the background was reminiscent of a lone tumbleweed rustling across the dusty, abandoned main street of Dodge City.
This was a perfectly done scene for a show whose setting is as much a character as any of the one's played by actors, and it was a fantastic set up for two rouge gunslingers with itchy trigger fingers ready for a final showdown. (I'll leave the over-analysis of the fact that Walt's wearing a whitish beige and Hank's wearing a dark rouge to others.)
This fantastic Old West stylized standoff between Hank and Walt established everything you need to know about how last week's episode ended. Both men have sized each other up and know how dangerous a misfire will be.