Formation
His original intention coming to Australia was to recruit Felix. Never in his wildest dream that he would get someone with a blessing from a notorious hacker.
It showed the potential hidden in her body. That was why Theo decided to invest in Millie's ability, but he also made sure that she trained her body so that she wouldn't be too weak, keeping his promise to Felix.
Now that he had left Millie with some money to buy the top equipment for her talent, he finally left the house with Felix.
Theo took the car to meet Isaac while Felix followed him on foot.
Felix knew one of the reasons why Theo wanted him to stay hidden was due to the ambush. From Isaac's condition, it was clear that some experts were hiding to harass him.
Hence, Felix needed to hide and eliminate those hidden dangers first.
In other words, Theo was actually using his life as bait.