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Clark: What were you doing at the Daily Planet?
Bart: I saw Chloe-licious had a byline a while back. I was in town on business,
figured I had to check it out.
What does Bart mean by the underlined? That Chloe was printing her column
when he saw her or he's just saying he had seen her column a long time ago?
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MadhulkWhat does Bart mean by the underlined? That Chloe was printing her column
when he saw her or he's just saying he had seen her column a long time ago?
I don't take this to mean that Clark actually saw Chloe only that he saw a story she had written. "a while back" indicates some indeterminate time in the past, it could be days, weeks, months, or even years depending on the context.

Without additional context I can't tell much more about what is going on here.
Comments  
RayH
MadhulkWhat does Bart mean by the underlined? That Chloe was printing her column
when he saw her or he's just saying he had seen her column a long time ago?
I don't take this to mean that Clark Bart actually saw Chloe only that he saw a story she had written. "a while back" indicates some indeterminate time in the past, it could be days, weeks, months, or even years depending on the context.

Without additional context I can't tell much more about what is going on here.
Thanks! That's all I wanted to know - that he has only seen her story a long time ago.