suī rán / tā men / céng jīng / shì / tóng shì / dàn / xiàn zài / yǐ jīng / méi yǒu / shén me / guā gé / le

虽然他们曾经是同事，但现在已经没有什么瓜葛了。

Although they used to be colleagues, they no longer have much of a connection.