In short, you have no idea at all what actually happened, but you insist Sears lied about it. This type of silliness can only undermine what you say. Please stop this. If you have any actual evidence to present, please present it.
So now flag-waving signals are a "telegraph". Apparently your entire basis for your claim of Sears being a liar is a minor point of semantics. Please stop wasting all this space and time with this.
Yes, telegraphs are telegraphs. That you don't know what a telegraph is doesn't alter the facts. You are being confidently wrong.
I believe you think only the electrical telegraph (patented 1837) is a telegraph. The fact that there is a modifier to the word telegraph is because the telegraph already existed, and this was a new way of sending telegraphic messages. This is much like the word "mobile" modifying the word "phone." Your argument is along the lines of "phone? Those old things on the wall with wires aren't phones. A phone is carried around in my pocket and has Candy Crush on it."
Optical telegraphs are the OG telegraphs.
To be absolutely clear, Lt Clum had a telegraph detachment aboard the Galena, and was in contact with the shore. The signallers numbered their stations sequentially, and his station was no. 31:
To be clear, the operating signals stations on the 30th June were:
27: Malvern House (5th Corps HQ)
28: USS Port Royal (sent to recce Dancing Point that morning, did not return that day)
29: Dew/Crew House (McClellan's CP)
30: Binford House
31: USS Galena
32: Haxall's House (4th Corps HQ)
33: USS Aroostook
34: Below Haxall's communicating with 35
35: USS Monitor (off City Point)
Stations 36 and 37 were placed late on 1st July, giving communications links between Harrison's Landing, Malvern Hill, and the gunboats.
Communications between the main CP (29) and Sumner, and Franklin (once his station is abandoned), were by courier. AdC's couriers etc. rode back and forth between station 29 and the Nelson Farm (Sumner's HQ) etc., carrying the messages.
Sears claimed there was no communication, despite the reports showing there was, and even some of the messages surviving. He was wrong.