How do I combine multiple wireless connections for a faster Internet?

How do I combine multiple wireless connections for a faster Internet?: "You can’t really combine or do ‘teaming’ with wireless signals.
Basically if you have two wireless connections e.g. one running at 2Mbit and one running at 8Mbit you can balance your traffic across them using software. But overall the maximum speed you will get for a certain task will be the 8Mbit in this example."

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