With respect to the brown paper package that Lee Harvey Oswald was said to have carried into the Texas School Book Depository on the morning of President Kennedy's assassination (November 22, 1963), CBS-TV reporter Dan Rather performed a very interesting re-enactment for the CBS viewing audience during the first segment of the four-hour TV special entitled "A CBS News Inquiry: The Warren Report".
Dan Rather shows the TV audience a brown homemade paper package, which Rather tells us contains a dismantled Mannlicher-Carcano rifle just like Lee Oswald's. Mr. Rather confirms the length of the rifle inside his re-created package as 34.8 inches, the exact length of Oswald's disassembled Carcano, which was a rifle found by police on the sixth floor of the Book Depository 52 minutes after JFK's assassination.
It's true that Rather could not put the re-created package under his armpit while it was also cupped in his hand. But it struck me as interesting that only a small portion of the bag (only a very few inches of the top of the bag) was sticking out above Rather's shoulder when he started to walk away from the CBS camera with the package cupped in his hand (the same way that witness Buell Wesley Frazier said Oswald had "cupped" the so-called "curtain rod" package in his hand back in 1963).
Unless someone was paying very close attention (which Frazier testified he wasn't), the few inches of that paper package sticking above the shoulder of the person carrying it could easily have gone unnoticed by a witness.
https://www.amazon.com/review/R3UUVFXJ2HAY01