But U.S. Secretary of State John Kerry - a Bruins fan - and Foreign Affairs Minister John Baird - a Senators fan - did jokingly "clash" over the rivalry when they met here Friday for Kerry's first bilateral meeting as America's top diplomat.
"(But) I want you all to know it's the first time I've ever heard anybody talk well of Senators," said Kerry, a 28-year veteran of the U.S. Senate.
While the two joked about hockey, more serious issues dominated the agenda, such as Syria and Iran. Perhaps most importantly, they talked energy and Keystone, too.
"Obviously the Keystone XL pipeline is a huge priority for our government and for the Canadian economy," Baird told reporters following the meeting, noting he and Kerry had a "good discussion" about it privately.
"We spoke about making a decision based on science, and based on facts," he said. "I think we all share the need for a growing economy to create jobs. We share a desire on energy security for North America, and we also share the objective of protecting our environment for future generations."