Christian Horner is braced for a ‘long day talking to Red Bull investigators and feels a ‘second interview’ may be required as he fights to clear his name. Horner has led Red Bull Racing ever since they were founded in 2005 and is set to take charge of his 20th season in F1 this year. The team are set to launch their RB20 next week ahead of the new campaign starting in Bahrain in March. But there are some concerns that the investigation into Horner’s alleged ‘inappropriate and controlling behaviour’ will not be resolved before the car is unveiled on February 15. Horner vehemently denies the al…