That is way, way wrong. The conjugate (concurrent) method has ZERO to do with exercises chosen. Rather it is the development of multiple abilities at the same time - making it ideal for beginners but horrible, absolutely horrible for advanced lifters. So you can develop strength, endurance and hypertrophy at the same time (or whatever you want.)
I don't know where you got this wrong information but I would HIGHLY advise you to stop listening to these jokers ASAP. The spread of stupidity seems to be exponential due to the internet.
I assume you are a student of training - this is all explained, very clearly, in Supertraining. I don't know who sells it anymore due to the legal battle with the book but the correct term is "concurrent" training. Check it out - it is a good read and can help explain a lot of things. Some of it is will not apply to you but it certainly beats the internet.