No, when I worked someplace that did code reviews, if the code review was too large (and 1k lines is far too fucking large), it would just get rejected outright

No, when I worked someplace that did code reviews, if the code review was too large (and 1k lines is far too fucking large), it would just get rejected outright. The original dev would have to break their work up, it could also mean that the tasks are too large. Generally we would code review each task, and a task would never require 1000 lines of code!