When we talk about the effects placed “in parallel” most often we talk about “send-return loop” of a combo / amp head. But there is another way to order your effects in chain which is also called “in parallel”. This way implies splitting the signal in two or even more individual lines to process them separately and combine somewhere at the final stage. This is a far more advanced and technically complicated approach. Maybe I will not unveil a secret to you, but this is the way many pro artists record their guitars in studio.