take look at the 5:36 when hes trying to kill the guy hiding behind the wall, when dor opened he pull a shot but haven't registered that the enemy is still behind wall (he have shot center of the hitbox not the place where enemy cloud stand up a little), half of second later hes trying to correct that but again he aimed exactly the other guy jumping on jumpad trough another wall (looks a like he have forgot there is another wall separating him from the enemy lol)

at the dm6 (close to the rl) there is situation where on the right side one guy jumping making noise but still he aims the one who is quiet and unfreezing teammate on the left, thats why i have added this part to, anyone who uses sound to localize enemies would aim the dude on right not the left one

the situation when he going out after spawn frag at dm6, well again he have hit center of the hitbox witch was behind the wall... he should aim the part what was standing up a little, but no...

about tracking trough wall, u need to know that sometimes the enemies moved quite fast so even a wall hacker won't point exactly enemy position, unless he have auto-aim turned on, thats why he moves the crosshair right after enemy but not exact aiming the target

there are often situations that there is many noise of his teammates, he even looking at teammates trough wall, but still he is able to point out a exact position of the standing enemy who is quite far away, sound localized the rail when the other 3-4 teammates running around him with rails?