Coincidences do not exist. The fact of its existence in the dictionary shows our perfect misunderstanding and our incorrect perception of the universe. There is a time and a reason for everything. Everything is perfectly measured and calculated in a harmony that matches everything. The leaf will fall so it gives the opportunity to the birds to use the sticks and branches to build their homes.
We think things happen in coincidences because of our limited understanding of the future and because of the lack of our knowledge in religion. Lets think about the causes and reasons of everything. Learning from nothingness is a bless!