Imagine it like that:
Travel assist is lvl 2 with capacitive steering wheel, acc and staying in the middle of the lane.
adaptative lane guidance is lvl 1 with acc, staying in the middle of the lane but without capacitive steering wheel. So you have to ever so slightly move the wheel or you get the warning every 10 seconds. This one is codable with a steering wheel, hence people putting a half empty bottle in the wheel to simulate a movement.
Travel assist is lvl 2 with capacitive steering wheel, acc and staying in the middle of the lane.
adaptative lane guidance is lvl 1 with acc, staying in the middle of the lane but without capacitive steering wheel. So you have to ever so slightly move the wheel or you get the warning every 10 seconds. This one is codable with a steering wheel, hence people putting a half empty bottle in the wheel to simulate a movement.