Mountaineer denies negligence in death of porter during record-breaking K2 ascent

Norwegian climber Kristin Harila set record for fastest ascent of 14 8,000m peaks, including K2.
Video shows climbers passing dying Pakistani porter Muhammad Hassan on K2 slope.
Harila claims attempted hour-long rescue but conditions were too dangerous to move him.
Accounts conflict on whether Hassan was alive when passed and if negligence occurred.
Harila defends actions as rescue attempts amid dangerous K2 conditions, denies accusations.