In the more sanitised culture of women’s football, there might’ve been a suggestion that Rangers and Celtic could more closely get along. But as the women’s game continues to gain notoriety, you can leave that notion at the door. Scotland’s footballing duopoly dwarf their professional counterparts and across political, religious and Glaswegian fault lines, play out one of the beautiful game’s most special rivalries. In the men’s game, this has very often boiled over into something a little more serious. Rangers and Celtic fans might often be friends on the surface but the tension of Old Firm d…