The point I'm trying to make is that "each word following the last" is a limitation of the medium, not the speaker.

Language expects/requires words in order. Both people and LLMs produce that.

If you want to get into the nitty-gritty, people are perfectly capable of doing multiple things simultaneously as well, using:

- interrupts to handle task-switching (simulated multitasking)

- independent subconscious actions (real multitasking)

- superpositions of multiple goals (??)