British Airways precursor mentioned in the first line of the Beatles' "Back in the USSR"
13A
Famous Italian designer easily confused with an even more famous Italian designer
15A
Maker of Nitro gaming laptops
16A
___ snuff
17A
Actor Hawke or character Hunt
18A
Topic in food science
20A
Mass transit?
22A
Key in which the alto saxophone is pitched
23A
Podiatrist whose company entered the Fortune 500 the year of its IPO
24A
Whole ones hang from the line
25A
Flower shower
27A
Where chewing gum may or may not lose its flavor overnight, per a old novelty song
30A
Words before "the Zoo" and "the Circus" in titles by Dr. Seuss (both of which have been pulled because of racist illustrations)
32A
Name of many animal sanctuaries
36A
Wrestler Anderson or sports agent/NBA exec Tellem
37A
Big name in super glue
39A
Outdoor equipment giant
40A
______ Republicans (I think they're still a thing, despite the party's mindless and unyielding hostility to this constituency)
42A
Countless
44A
"It was too good to pass up!"
46A
Telcos, e.g.
47A
Auguste ____ (seminal sociologist/positivist philsopher)
50A
___ Dome scandal of the 1920s (somehow, no whistleblower was involved)
52A
Having registered
53A
Term often applied to non-coreligionists (atheists are immune by definition)
56A
Set of rugby positions responsible for "winning the ball at lineouts and locking the scrum into position." Gimme, right? Here's a hint: maybe your seat starts with "B'.
58A
Trig function (think of soaking up some sun together)
59A
Sartre, "L'___ et le néant"
60A
Copacetic, in Kingston
61A
Oklahoma city famed for oil and art deco
62A
It's negated by "in the greater scheme of things"
63A
Abbr. that means "since"
64A
Trickle
Verticales
1D
What a house may be built on
2D
Slangy approval
3D
Skiing term from the German for "shot"
4D
Rarer
5D
Succumb to seemingly every other ad on every sports broadcast
6D
"It was too good to pass up"
7D
Important god for 33 Down
8D
"___ is what you can get away with" (Andy Warhol)
9D
Cruise ship staples
10D
Some German cars
11D
Patronized, in a way
12D
Team name that made more sense before they left Baltimore (though the "Utah Jazz" is even more tenuous)
14D
Creep
19D
Chocolate bar's pronouns?
21D
Schmoozes
25D
Ampoule
26D
___-Cuban All Stars (terrific band playing traditional Cuban music)
28D
If tarot readers are taro eaters they might see themselves eating this
29D
Cinnamon and brown sugar delivery device served piping hot in a bowl, ideally with plump, juicy raisins
31D
Support group for young people dealing with a loved one's drinking
33D
Early Greek philosopher/natural scientist/all-around brilliant individual
34D
Cut the mustard, perhaps?
35D
"The ___ Are Alright" (pioneering rockumentary about The Who)