Father Morten, thanks for stepping by and leaving a comment, I am one of your faithful followers of the One True Rodinal Church
About the light post, it was difficult to me to get the perspective I wanted without including it (I basically should have moved to the next tree to frame the shot, but I liked the branches of the first tree better). And all in all, I didn't dislike the look of it in the viewfinder, so in the end I decided to include it.
Next time we have such a thick fog here in Italy, I might try following your suggestion anyway; that park is only a few minutes walk from my house....