Most airlines will stipulate that PF must keep his hands on the thrust levers and control column below MSA at all times, other than briefly to alter Heading Bug etc. In gusty conditions (not applicable here), the autothrottle can't always keep up,so you often find yourself 'helping' with the thrust levers anyway.
Why an automatic landing? LVP's weren't in force, so that wouldn't be an option anyway (ILS not protected). The autopilot would be disconnected at around 150 feet minimum (depending on SOPs) and typically at 500 feet or above to carry out a manual landing.
Only one AP would have been engaged, so any fault would have to be spotted by the PF who should disconnect the AP and fly manually, either to land or go around.