Yip because they had no reason to lie.
Only JM completed a WS on 8th Aug whereby she phoned the house from JB's cottage in the presence of AE and EP in an attempt to establish the time of JB's call with her housemates. She was told 3.30am and stated this in her WS of 8th Aug
How do we know the other witnesses/housemates were not coerced by DS Jones either on the basis JB was responsible eg SC could not have shot herself twice as per JB's interview (at odds with pathological evidence) and/or coercion on the basis JM and SB acknowledge illegal drugs were used (JB/JM at a min and stored at the shared house for distribution around uni campus)? DS Jones turned up unannounced supposedly to check on SB's alarm clock. How do we know he didn't 'find' any drugs?
There was no reason for any of the housemates to go to any effort to accurately record the time. They made WS's as follows:
JM - 8th Aug - Told by housemate(s), believed to be Helen Eaton, via tel call from JB's cottage time was 3.30am. This all happened in the presence of AE and EP.
SB - 10th Sep - 3.15am but may have been inaccurate as she supposedly kept her alarm clock 10 mins fast. Then on 19th Dec she made a further WS adamant that the time wasn't 3.15am but 3.12am. Apparently she was nervous upon making her first WS and this is the reason she messed up and realised she was 3 mins out!
HE - As above originally told JM 3.30am on 8th Aug but when completed her WS on 11th Sept stated 3am.
Joanne Woad - In her WS of 16th Sept she stated 2am. Then on 3rd Oct she made a further WS stating she could only recall the '2' on the alarm clock and therefore it could have been anywhere between 2am and 2.59am.
Douglas Dale made a WS on 9th Sept where he stated 3 am.
Totally unreliable imo whereby the above witnesses were coerced into providing times in an attempt to show JB calling JM before his claim of a tel call from NB.
In the absence of digitally recorded info by independent parties ie telecomm providers it's all hopelessly unreliable.
(Source: Points 290 - 330 CoA doc)