Complex sentence: Linda departed the series on 25 December 2016 although she made two separate guest appearances on 16 March and 30 June 2017, it is unknown when she will return full-time.
Split into simpler sentences: Linda departed the series on 25 December 2016 although she made two separate guest appearances on 16 March and 30 June 2017. It is unknown when or if she will return full-time.