There are several cautions and disadvantages of this method. First, you should generally avoid trading in multiple time frames at the same time. This is especially true if one of your methods is scalping. You simply cannot be successful at this kind of trading without constant attention and focus.
However, trading with a medium and long-term time window is possible, but you should still be careful. Personally, I do not see why it is a problem to bet on a swing in a relatively wide window while scalping in a short time frame. What is definitely true that multiple time frames should not become an excuse for undisciplined and chaotic trading.The trader should define the market conditions in which he/she applies the short and the long term forex trading strategies.
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