SALT LAKE CITY — The final stretch of the Chicago Bulls’ season is focused on learning lessons — how to beat top teams, how to manage constant injuries, how to mature a group of inexperienced players into the highest caliber of competition. In February, coach Billy Donovan welcomed the challenge of a schedule packed with top contenders from both conferences. But the Bulls are now 4-7 since the All-Star break, nursing injuries and inconsistencies as they struggle to stay afloat in the Eastern Conference standings. After losing 125-110 to the Utah Jazz on Wednesday night to fall a half-game behi…
