IIRC, Huebner's 1st volume argued quite convincingly (to me) based on the historic documentation available to Huebner at the time that Darby had formed a baseline view of the imminence of the Lord's return by 1828 (ie Darby had formed this view by 1828, not that he expected the Lord's return by 1828 😊).

However, the notes from an early Powerscourt conference (1830?) which Tom procured in recent years seem to cast doubt on this, quoting Darby as being strongly against some of these theories - this conference being later than 1828.

I have to say the notes of Darby's views from that conference don't ring true to me - I presume the provenance of the notes is accurate but whether the notes themselves are accurate is another question.

JS