Can I say two-series to describe a series of two events?
I am presenting two talks on two different dates, and I would like to describe the first one as the first of a two-series talk. Is two-series talk a word that can be used with this meaning? Googling it I found zero references. This question looks similar and I am thinking of changing to use a two-part series, but isn't it maybe a little too cumbersome?
I'd suggest, "the first of a pair of talks," would be much less cumbersome, and easily readable.
Series does have the implication that there are a few, i.e. 3 or more.