Dylan had to stay back to handle the mess Leon created by leaving without any words. He lied as Leon wasn't feeling well and he needed rest.
Not just the press conference, he had instructed Leon's secretary to keep eye on the shareholders. Those shareholders had to leave the city very quickly. He could see the displeasure on them so Dylan did his part to control the damage.
At another end, Leon drove his car at high speed and stopped in front of a huge business tower. He clearly remembers how small Skylar started and how big it grew in three years. The tremendous success was something hard to get by just anybody.