One more thing on this, speaking of Heidegger and his heirs: it occurred to me that several of those notes make sense in the context of Gadamer’s writings on the ‘hermeneutics’ of art, or the way art conveys meaning. In fact, apparently
Gadamer has written on Celan. I think Gadamer would also see poetry as “an event”: not only a confrontation/conjunction of words, but also of worlds. Here’s a quote from Wiki on Gadamer that is applicable to poetry, and very Lit Crit-esque, but IMHO obviously true, with wide implications:
[T]he interpretation of a given text will change depending on the questions the interpreter asks of the text. The "meaning" emerges not as an object that lies in the text or in the interpreter, but rather an event that results from the interaction of the two.
I have only dabbled in Gadamer, and that, years ago, but you might find his work interesting, Andrew, if you haven’t already read it. It seems like Celan and Gadamer are simpaticos.