Total Recall fall through center of earth

In the following clip from “Total Recall“ the protagonists are traveling and passing straight through the center of the Earth. Assuming such a feat is possible, which of the following statements illustrate issues with the physics in the clip? 1. They should be weightless the entire time as they are in free-fall. 2. They remain weightless too long as gravity is 0 only at the very center of the Earth. 3. Gravity “turns“ on and off too abruptly and in reality it would be a more gradual process. [This short c