Why do people believe Nessie and Champ are related?

People believe Nessie and Champ are related due to their similar descriptions as large, elusive lake monsters said to inhabit Loch Ness in Scotland and Lake Champlain in the U.S., respectively. Both creatures are often depicted as long-necked, serpentine beings, leading to speculation that they may share a common origin or species. Additionally, sightings of both creatures have fueled the idea that they could be part of a larger mythos surrounding cryptids, further intertwining their stories in popular culture.