No, in the TPM novel it doesn't say that Palpatine is attending the funeral at the same time Sidious is on Coruscant. Those 2 parts are just close together. Undomiel, you mentioned a few pages back that Yoda should be able to detect a Sith within the same room. Well... Yoda has never encountered a Sith since they seemingly died out 1000 yrs. before the events of TPM. That's 100 odd yrs. before Yoda was born. This fact, coupled with the Sith devising a plan for 1000 yrs. to conquer the galaxy, makes me think these dark jedi most likely have learned new ways to manipulate the dark side of the force. I don't want to get into force detection here but I believe Palpatine is MUCH more adept at using the dark side than Yoda is with the light side. The dark side is quicker, easier and more seductive. The jedi weren't as quick and paid the price. Obi Wan and Qui Gon felt uneasy throughout most of TPM. EVEN when Maul was waiting for them on the other side of the Naboo hangar bay door. They were going to march right through the door until it opened and they saw him with their own eyes. The sith apprentice Maul hid from a Jedi Master. I think a Sith Master can do it too and is MUCH better at it. "At last we will reveal ourselves to the jedi" partially tells me that it's up to the Sith when they're to be seen.