The original poster also speaks to you directly saying he was not angry with you in any manner but thta he was making the point that no disrespect to the dead was intended, and none to your personally as well, the original point was that expediency was what ruled the burials of all men hastily buried on battlefield by both sides, and the consensus on News and Views supports that idea. Many places and in other battlefields where Union men buried their own were uprooted shortly afterward by weather and wild animals exactly like what is described above. No dishonor was meant to either side. Anyone reading the thread in N&V can see that.
First, imagine the staggering number of burials after that terrible battle and the exhaustion of the men.
Second, the Confederate deaths from the Hornet's Nest were on the first day when the Confederate forces still held that field, the Union had been pushed into a line near the river. Clearly the Confederates would have been burying their own dead, and in the dark after a long exhausting day. If they were buried the following day or later by Union men after the two daybattle was over then you are saying the Southern men themselves just left their dead lay where they fell and didn't even bother covering them at all. It makes more since to believe the tired Confederates made an attempt to cover their own quickly.
Third, every description of the first night, from both sides, was that rain poured for hours in a torrent many described as one of the the worst downpours they had ever endured, and it rained several times over the course of several days both before and after the battle. After the second day when the Confederates withdrew, the mud on the roads made passage very difficult for them but at the same time kept the Union forces from pursuit. Mud and rain and exhaustion such huge numbers of casualties to be covered played a much bigger role in the depth and manner of burial than any other factor. It would have been very very hard to dig deep graves in such mud, and incredible hard work.
Fourth as the original post above from Keiner in this thread shows clearly he says both sides were buried in twin trenches only a few feet apart. The quote clearly shows the dead from both sides were in twin trenches showing equal treatement. However he says the Union much later exhumed their own for rather symbolic individual burial.
Furthermore the post that speaks of the uprooted bones etc clearly says that the Confederate trench was indeed found marked with white posts stuck in the ground to mark the location. 30 years later the visiting soldier in the first post above says they was no marker remaining but they clearly had been marked originaly as folowing posts in this thread show. So both trenches Union and Confederate had been marked and the treatment of the dead identical until much much later when the Union disinterred theirs. There could be no disrespect for the Confederate dead at Shiloh since Union dead had been buried in the same manner.
My reading of the thread in News and Views is that the gentleman was not upset with you at all but the exact opposite, he tried to reassure and comfort you that you need not take offense. The whole point of the thread, wiht others agreeing, was that your ancestors were buried with as much respect as any Union man at the time of the battle.