Jaren Hall impresses at Minnesota Vikings training camp; Why Hall feels different than Kellen Mond; Will Hall push Nick Mullens for the backup job; Jordan Addison getting first-team punt return reps; Kevin O'Connell coaching up Justin Jefferson; Brian Flores deploying the big nickel defensive looks; Which cornerbacks are standing out; Plus more observations from Vikings training camp.\nLearn more about your ad choices. Visit megaphone.fm/adchoices