Factual error: When Hattie is firing at Brixton she only fires 4 shots before weapon stops. She is using a Glock 26 which carries 10+1 rounds and the slides doesn't lock back yet she still pulls the trigger and you can hear the "click'. (00:02:35)
Continuity mistake: Before Hattie and Hobbs get in the plane they have several bruises and wounds on their faces which disappear.
Continuity mistake: At the end while Hobbs and Hattie are in front of the sun, it's almost dawn and the sun sun is shining on their faces, then it's high in the sky.
Continuity mistake: When entering the airport as Mike Oxmal Hobbs has a moustache. When entering the plane it is gone.
Other mistake: The virus should get out of Hattie's body in 30 minutes, but when it reaches Dawn the machine is still counting, meaning that the 30 minutes aren't over.
Continuity mistake: During the morning scene, it shows Hobbs on the right side of the bed when he turns off his alarm and wakes up, but in the next shot, he's on the left side of the bed.
Answer: I believe he was referring to the villain being once like a brother to him.
Quantom X