Do u think talking about kissing with a co worker is flirting?

Was close to this woman from work we once joked about me swapping shifts with her and I joked back and said what do I get she said a kiss I never swapped shifts about a week later we spoke about the way she would want a guy to kiss her not sure if she is flirting or interested in me but she knows I like her

Do u think talking about kissing with a co worker is flirting?
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