The rivalry was especially bitter in the second half of the 1980s. For much of this time, the Flames and Oilers were the two best teams in the Campbell Conference, and by some accounts in the entire league. One of the two teams represented the Campbell Conference in the Stanley Cup Finals for eight consecutive years from to (Oilers 6 times, Flames twice). During this time, the Alberta teams won six of the eight Stanley Cup Championships, including the Oilers winning five Cups, a feat that has not been repeated since. The Edmonton Oilers of 1983–90 are recognized as the NHL's last dynasty, with line-ups through this period that featured Hockey Hall of Fame (HHOF) legends like Gretzky, Glenn Anderson, Paul Coffey, Grant Fuhr, Jari Kurri and Mark Messier, guided by HHOF coach Glen Sather. The 1984–85 Oilers would be voted as the greatest NHL team of all-time during the league's 2017 centennial celebrations. The only time the Flames won the Stanley Cup during that period was in , led by HHOF superstars Lanny McDonald, Doug Gilmour, Al MacInnis, Joe Mullen and Joe Nieuwendyk. This period of repeated confrontations was mainly due to the way the playoffs were structured for much of this time. The top four teams in each division made the playoffs, and the winners of the divisional rounds met in the conference finals. As the Flames and Oilers were both in the Smythe Division, this made it very likely they would face each other in the first or second round, en route to the conference finals. That same system made it a near-certainty that all other playoff qualifiers in the Campbell Conference faced the nearly unachievable (during that 8-year period) task of having to get past either the Oilers or Flames to make the Stanley Cup Finals. During this run, the Stanley Cup was awarded in Alberta from to (Oilers winning the deciding Cup game against the eastern Prince of Wales Conference representative in Edmonton in 1984, , and 1988, while the east's Montreal Canadiens won the deciding game in Calgary in ).