The fixed portion inside every attendance
Each visit begins with the same sequence regardless of how long it lasts. The cleaner arrives, disarms or unlocks, brings equipment in, fills and prepares, and at the end reverses all of it and secures the premises. On a longer attendance that overhead is a modest share of the total. On a very short one it can consume a substantial part of the visit before a single task has been completed, and no amount of efficiency removes it.
This is why two quotes offering the same weekly hours can deliver noticeably different results. Five short visits and three longer ones may total the same time on paper, yet the second structure contains materially more productive minutes. Neither arrangement is wrong, but the difference is invisible unless somebody asks the question, and most quote comparisons never do. Asking for attendance length rather than visit count is what makes the difference visible on the page.
