Should Wales overcome Scotland on March 9, then defeat for England against Italy would set up the title clash for March 16.
However, Jenkins has called for Wales to remain focused on their "tough" fixture against Scotland at Murrayfield.
"The main focus for us is to win our games, starting against Scotland, which we know is going to very tough," he told Sky Sports News.
"There is no thought or mention of England a week later. When that comes around it will bring enough pressures with it. Our focus is on Scotland and about doing a job there.
"[Scotland] are the same as us - two wins out of three - and it is a home game for them. They will fancy their chances against us and then to go to Paris on the final day with a chance of maybe them winning the championship."
Should Wales overcome Scotland, then it would be their third successive away win.