I personally do not think that "non-demanding time" is necessary, nor effective, to bond with a horse. A horse is looking for a leader to follow, not a BFF. Your body language is essential in getting a horse to "bond" with you. To humans, it's called bonding, but horses see it as having a leader to keep them safe and keep them fed.
Check out this site: www.marvwalker.com
Request The Bonder from him through the site and use it on your horse. It works with every horse in a matter of minutes.