The answer to “Stack heading to the post office, or what 20-, 27-, and 44-Across all have?” in the LA Times Crossword

"Gimme a break!" 4 ltr "In __ of gifts ... " 4 ltr "That's the __ of my worries" 5 ltr "There you __!" 3 ltr "__ go bragh!" 4 ltr Agreed (with) 5 ltr Allergist's lead-in to Pen 3 ltr Angels outfielder Trout 4 ltr B'way sign 3 ltr Backyard water fight brand 4 ltr Bridal veil netting 5 ltr Butter substitute 4 ltr Butter substitute, in some recipes 6 ltr Chapel centerpiece 5 ltr Clouseau or Gadget's rank, briefly 4 ltr Conclusion 3 ltr Cornish game __ 3 ltr Dishwasher capacity 4 ltr Edinburgh resident 4 ltr Embarrass 5 ltr Empire State NFL team 12 ltr Endure 5 ltr Expenditures 5 ltr Features of easy-to-read signs 12 ltr Foamy, as soap 5 ltr Former Yankee slugger Martinez 4 ltr Frequently 5 ltr From __ Z 3 ltr Frosty 4 ltr Guys 3 ltr Hardly strict 3 ltr Health resorts 4 ltr Held a match to 3 ltr Historic stretches 4 ltr Hog farm pen 3 ltr Inc. kin 3 ltr Insta post 3 ltr Instruments with many pipes 6 ltr Insurance filing 5 ltr Intellectual 7 ltr Item in a hotel closet 4 ltr Laughs noisily 5 ltr Like Supreme Court arguments 4 ltr Like a billionaire 4 ltr Like a brand-new canvas 5 ltr Lithium-__ battery 3 ltr MBA hopeful's exam 4 ltr Make amends 5 ltr Metaphor for a plan that may collapse at any moment 12 ltr Mother Earth, in Greek myth 4 ltr Name on much farm equipment 5 ltr One thumbing for a ride 10 ltr Org. with a white rabbit in its logo 4 ltr Passing trend 3 ltr Patinkin of "Homeland" 5 ltr Phase one 5 ltr Play-__: Hasbro toy clay 3 ltr Pop-ups in a free game 3 ltr Port St. __, Florida 5 ltr QB passing stat 3 ltr