Hi @Maree25 it's not a coincidence!
If you update your calendar on a regular basis, the platform views your listing as active and therefore as a safer option for a successful booking, so you should appear higher in rankings when guests search.
If you notice your bookings come in "waves" this is for the same reason- a successful booking will place you higher in search, as again you're a safer option and therefore make you more visible to other guests searching, which is why you'll often see bookings come in one after the other.
Best wishes
Paul 🙂