In order to be cleared for a visual approach, overtaking aircraft must be advised of the _______ and ______ of the preceding aircraft.

When clearing overtaking aircraft for a visual approach, it is important to provide them with the distance and speed difference of the preceding aircraft. This ensures that the overtaking aircraft has a clear understanding of how far ahead the preceding aircraft is and the relative speed at which they are flying. This information is crucial for maintaining safe separation and avoiding any potential conflicts during the approach. By knowing the distance, the overtaking aircraft can determine how long it will take to safely pass the aircraft ahead, and understanding the speed difference helps in planning for any necessary adjustments to their own speed to ensure a smooth and safe landing sequence.