It depends. I personally once saw an offer where 'gardening leave' was only included if the employer chose to let you go, i.e. not if you chose to leave. And it

It depends. I personally once saw an offer where 'gardening leave' was only included if the employer chose to let you go, i.e. not if you chose to leave. And it wasn't for 6 months, IIRC it was at least a year. And of course it didn't included any bonus, which is typically the larger portion of total comp in these situations.