Max 4 overs per bowler; No-ball: bowler oversteps front popping crease → free hit (next ball cannot dismiss batter except run-out); Wide ball: outside off-stump (per umpire judgment) → extra run + re-bowled
Why people argue about this
People often assume that a bowler can only bowl 4 overs in every single innings, which leads to misunderstandings when they realize it's per match rather than per innings. The confusion arises because the official limit applies across all matches within a tournament, not just one game.