First-off.....do your weights first, and then your cardio. Weight-training is very demanding, largely happens anaerobically and you want your full-juice to get the most out of your routine.
Having worked weights for an hour, your blood-sugar will be down and your body will more so be burning fat in an attempt to re-energize and put glucose into your blood: this is the time to do your cardio and tap into that fat-burn for weight-loss. I'm not sure I'd do more then 30-45 minutes of light to medium cardio....anything longer or more demanding could be catabolic and detrimental to your goals for weight-training.
I've easily gained a lot of muscle while also losing fat....the notion that you can't do both at the same time is wrong, at least for some people.
If your goal is to lose fat, then you want to do lots of cardio, watch your diet and in order to MAINTAIN your lean muscle mass, you want to keep a 2-3x per week weight-training routine. The idea being that you place a toll/load on your muscles so that your body, in coping with the calorie deficit, doesn't seek to shed some of that muscular burden (lighten the load per se). In this case you're not lifting very heavy....just keeping the muscles going with med/high reps and a medium load.
If your goal is to build muscle & get big, you'll want to keep your cardio to 30 minutes or less so as to avoid catabolism and you'll want to hit the weights heavy & hard. I know body-builders who outright refuse to do any cardio.
I was recently told by solid source that an hour of exercise only burns about one ounce of fat, whereas eating 500 less calories per day can burn 2 ounces of fat. Point is, it's easier to lose fat by diet then by exercise. I'm not sure I entirely subscribe to that notion, but the key thought is that diet is where it's really at...what goes in your mouth is the key. Ever heard the saying "Abs are made in the kitchen"?
Everybody's body is different...I've had no trouble getting large while also losing weight, but that may not be the case for many people. Some guys just can't stack-on muscle no matter how hard they try.
Question is, WHAT ARE YOUR GOALS? What kind of body to you want to have? Where are you at now and what's your priorities?