The Mowbray Hotel barman who was working on the night has given evidence for the Crown in the second week of the trial of Mitchell Clay Dowling, 44, and Jay David Blazely, 40.

Tyson Montgomery told the Launceston jury on Tuesday that the accused who struck the last blow to complainant Tony Brown then "sort of charged over" to another pub regular who was disabled.

Mr Montgomery, during evidence-in-chief, said the accused stood over the top of the disabled patron and yelled, "Do you want to go to?" or words to that effect.

"So myself and one of the other regulars got in between those two and said, 'He's disabled, leave him alone'," he told jurors.

"At which point that defendant then turned around and left the bar in a quick and angry walk ... but through the door."

Mr Montgomery said he locked the door and instructed the regular pub patron not to let anyone back into the bar.

He said he checked Mr Thomas, who was lying on the ground, and he had a pulse and was breathing very shallowly but had not regained consciousness.

Mr Montgomery said he also checked Mr Brown when a co-worker told him she did not think Mr Brown was very well.

"I had a look and he had turned very pale," he said.

The co-accused brothers are contesting eight charges of violence upon four men, some allegations jointly, including criminal code assault and having committed an unlawful act intended to cause bodily harm.

Mr Blazely faces the most serious charge and is accused of having caused grievous bodily harm to Grant Thomas by punching him to the head when Mr Thomas' head was on or near a concrete floor.

Mr Thomas' sons, Derryn and Jesse Thomas, are also complainants.

The brawl started in the Mowbray Hotel about 8pm on July 17, 2013 and complainant Tony Brown died afterwards.

The trial continues.