Of course, it was possible but probably not because of the merge, it is Bitcoin does the market uplift bring altcoins including ETH. In fact, this is a common scenario that we have seen even before and never I see any reason/s that could make ETH pumps separately without seeing Bitcoin also.
Yet, this possibly happens after halving, and certainly no doubt about it.

Well, anyways, the market is moving upward, however, that was not yet an indication of the bullish run but at least we know that there is still a big chance to see the market growing.