Multiple Object Target detection

Hello. I am some what new to Vuforia and Unity. I am stuck at a problem where I have two object targets ( say, a car and a surfer) in a scene. I didn't do any sort of augmentation right now on them. Just want to them to be detected. When I play the scene, using my webcam, the object target which first gets detected (say car), is detected the rest of the time. The other one (surfer) doesn't get detected, at all. Same goes the other way round. However, when I keep both of the objects together closely, and point my webcam at them, both of them gets detected, and now if I separate them (with the scene running), and use the webcam to point to each of them separately, each one gets detected.

So the problem is, what I understand is, The first detection, which ever it is, one of them, or both of them together, is deciding what to be detected the whole time when the scene is in play. But this is not correct, right? If I have two objects in my scene, each of them should be detected independently of the other. I even tried with "Max Simultaneous Tracked Objects" value to 2 (even though I guess it has nothing to do with the problem I mentioned), nothing changes.

Please help me out guys, I am kind of on a tight schedule. Thank you very much, in advance.