The 80286 introduced "Protected Mode" in 1982. It was not popular. The mode was difficult to use, lacked paging, and offered no way to return to real mode without a hardware reset. The 80386, arriving three years later, made protection usable -- adding paging, a flat 32-bit address space, per-page User/Supervisor control, and Virtual 8086 mode so that DOS programs could run inside a protected multitasking system. These features made possible Windows 3.0, OS/2, and early Linux.
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It's in such small moments that Jarmusch allows his audience to determine the meaning of these scenes and this collection of stories. But where the first two sections of this triptych are about relatively strained relationships, the final is a warm portrait of almost supernatural closeness.
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