We do not recommend listening to two subliminal messages at the same time. Especially if they are created by two different companies.
Listening to two different subliminal messages at the same time can cause confusion and actually reduce the effectiveness of both messages. It is best to focus on one message at a time in order to maximize its impact.
We recommend using one subliminal program at a time and then moving on to the next one. Listening to two subliminal messages at the same time would not only be confusing it would probably be annoying.
If you find yourself annoyed or agitated while listening to subliminals you are in the wrong state of mind. The subliminal would probably not be effective in that state of mind.
The subliminals may also clash with each other.