If i download the shopping assistants for Delta, UA and AA will they create problems with each other? I do quite a few searches over the course of a month and was wondering if it is possible to have all 3 search bars and use each one around 300x a month for max miles. Do they interfere with each other if you have more than 1?

Also, can you have a card connected to more than 1 dining program at the same time. Can a card linked to skymiles dining also be linked to AAdvantage dining?