Can you use both the async and defer attributes on a HTML tag?

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From the specification: https://www.w3.org/TR/2011/WD-html5-20110525/scripting-1.html#attr-script-async

The defer attribute may be specified even if the async attribute is specified, to cause legacy Web browsers that only support defer (and not async) to fall back to the defer behavior instead of the synchronous blocking behavior that is the default.

(Check the reference link below to see a visual representation of the differences between normal scripts and scripts with defer and async)

References:

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