Traveling and coincidence
It appears that the more one moves--and especially if you add the intention of experiencing it--the more one sees synchronicity.These may be flash experiences or major associations of an astounding synchronistic nature. Robert Moss in his book, Three Things: Dreams, Coincidences, and Imagination says it helps to travel, be in motion, and in a mode of transportation. It is true. When in motion, I and others experience more synchronicity.
Note a reader's comment about being on a Greyhound bus and seeing a Greyhound dog.