You can get 6 weeks for a careless head high tackle and they have now aligned actions like this with someone tackling with poor technique.
But you don't.
6 weeks is a long suspension.
The only suspension SANZAAR has handed out longer than that in recent years is 7 weeks to Lachie Swinton last year for a late, high hit on Jake Strachan. He was a multiple repeat offender so received less mitigation.
Darcy Swain received 6 weeks for destroying Quinn Tupaea's knee in the Bledisloe Cup but likewise he'd had a foul play suspension the year before for a head butt against England.
There was a 5 week suspension for Sam Gilbert for a tip tackle in 2022.
Beyond those there hasn't been a suspension longer than 4 weeks in at least the last four years.