Also thinking, Palps doesn’t always knows or senses everything. Heck, in ROTJ Vader sensed Luke was looking for him and Palps responded he didn’t feel that. It could have been a lie, but let’s take it to face value. He is not all knowing or sensing. He can do a lot, but not everything.
Ultimately it does rely on how much information Snoke knows that is “transmitted” to Palpatine. In my mind at least, something that Snoke created with the force would be MUCH more likely to be shared with Palpatine due to the amount of strain and effort it creates. Something that he kinda knows about and is simply relying on? Maybe not so much.