Can a brother go after same girl that failed talking stage with older bro becasue she needed to focus on work?

Was aware that brother never dated this chick but did hangout a few times and ended on a good note talking. Realized that she had some sort of feelings w me aswell months later after meeting due to work with both of them not sure what she wants and if she feels that we can talk too

Can a brother go after same girl that failed talking stage with older bro becasue she needed to focus on work?
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