By Sedara Oluwadara Harry Kane's equaliser six minutes into stoppage time earned Tottenham a dramatic draw as a fiery London derby at Stamford Bridge ended in an angry confrontation between Thomas Tuchel and Antonio Conte that resulted in red cards for both managers.       Tempers were running high throughout as Chelsea twice led before Kane's glancing header seconds from the end gave Spurs a point.               Chelsea dominated the first half and fully deserved the 19th minute lead they earned when their two summer signings combined, Kalidou Koulibaly flashing home a