Danny Rohl has been unable to take Rangers to next gear – but still deserves creditQuiet anger came from the top table inside Hearts’ media room at Tynecastle. Danny Rohl was the first of the two head coaches to speak after Rangers’ 2-1 defeat and there was no hiding the frustration and despair from the Ibrox boss.The victory for Hearts doesn’t arithmetically end third-placed Rangers’ chances of winning the Premiership title but Rohl and his players know they are now looking for snookers. They must win their last three matches against Celtic, Hibs and Falkirk and hope the league-leading Jam Tarts take a maximum of two points from their remaining games.It is unlikely. What is more plausible is their challenge officially being ended before they next kick a ball. Should Hearts win at Motherwell on Saturday night, the day before Rangers head to Celtic Park, and the best Rohl and Co is achieve is second spot.Rangers head coach Danny Rohl on the touchline during the 2-1 defeat by Hearts at Tynecastle. (Photo by Craig Foy / SNS Group)…