When you eat sucrose, which is, for practical purposes the form of carb in maple syrup, your body breaks it into sucrose and fructose. The glucose fraction is fast absorbing. Your body does not let a significant amount of fructose into the bloodstream. Some is absorbed into the gut organs which have an enzyme that turns the fructose into glucose and then releases it into the bloodstream. This is rather fast. Much of the fructose goes to the liver which also turns it into glucose, unless there is too much to handle in which case it is turned into triglycerides which will be released into the bloodstream or stored as harmful liver fat. Liver fat and triglycerides COME from fructose in large part (also alcohol). They are not primarily made from dietary fats. For years, dietitions have recommended cutting dietary fat to reduce triglycerides, but sucrose (and the fructose it contains) are the dominant source of blood triglycerides and liver fat.
Normally, the liver can manage about 25 grams of fructose (from 50 grams of sucrose) per day without elevating triglycerides or depositing liver fat. The 25 grams are turned into liver glycogen. Above this level, there is some statistical increase in health hazards from more fructose EXCEPT that the liver can use more fructose if it is depleted by training or from being in an extended carb deficit.
Fructose around training will be made into liver glycogen and reserve glucose for muscles. Most of the research I have read suggests that about 1/3 of the carbs burned in training should optimally come from fructose and 2/3 from glucose to fill liver and muscles most efficiently. This happens to be about the ratio in a, hmmm, banana. A banana with 24 grams of carbs will have about 8 grams of starch (glucose polymers) and about 16 grams of sucrose which will yield about 8 grams of fructose and 8 grams of glucose. In fact, one of my theories at to why humans like “sweet” things is that many fruits come in close to a 1/3 net fructose 2/3 net glucose ratio. Maybe a little higher in fructose.
Also, you are correct that the fructose tends to raise blood sugar later than pure glucose. Fructose does not require insulin to enter the liver, but if you just eat it, the liver is going to fill up and be stimulated to release glucose over the next 1-2 hours, so it may give a sustained release. Also, even though fructose does not take insulin to enter the liver cells, excessive fructose that turns into triglycerides makes all of your tissues more insulin resistant.
Anyway, the fructose part of sucrose is best used around exercise. In general, at about 300 calories per hour a 150 pound man will burn about 200 calories from fat and 100 from carbs. At 600 calories an hour is will be about 300 from fat and 300 from carbs and at 900 an hour it will be about 300 from fat and 600 from glucose so fat burning tops out at about 600 cals an hour, and the amount of carbs needed to replenish glycogen goes up 6 fold, from maybe 100 cals (25 grams) to 600 cals (150 grams as work rate goes up from 300 to 900 calories an hour, because beta oxidation is too slow to keep up. The 900 calorie an hour workload will also stimulate cortisol to break down muscle tissue to get the balance of carbohydrate. .