I found the key this morning: The problem was that the observer was held on. Suddenly it was seen that "the observer" is only the objectification of observe-ing. And the "I" only the objectification of the I-ing. When this was seen, these ...-ings all came to the foreground and suddenly there was only these ...-ings without exception.
This had happened many times in half sleep before, but I couldn't find out what made the difference and prevented it from being experienced even when fully awake. The key is to simply experience EVERYTHING as a seamless event-ing - including I-AM-ing, I-ing, feel-ing, see-ing, hear-ing and observe-ing. And then all experience-ing is vivid, direct and always fresh.
That is no new state it was so the whole time.