Imagine if say Evans had stayed up a bit later to have another cuppa tea, and happened to hear the very first Titanic CQD, and he runs and tells Capt. Lord, who fires up Californian and heads towards the rockets. Lord arrives on the scene in time to maybe rescue quite a few additional people from the water, or even rig a plank across between the two ships and save almost everyone depending if he got there soon enough.
This is getting more than a bit nonsensical speculation.
The first CQD message was sent out after midnight and even if Cyril Evans had picked it up almost immediately and informed Captain Lord, it would have taken the
Californian perhaps another 10 minutes at least to be on its way to the intended rescue. It was a 12-knot ship at best but given the conditions, it would have taken them some time to get to that speed. The
Titanic and
Californian were separated by about 15 miles and there were icebergs around and so it would have been close to 2 am by the time the latter got anywhere close. By then there would have been
Titanic's lifeboats all around and that ship itself 20 to 25 minutes away from foundering. Under those conditions, talking about "rigging a plank across the two ships and rescue almost everyone" is something even Mr Bean would not have believed as possible.
At the absolute best, IF Evans and Lord had reacted immediately, they
might have rescued 40 to 50 half-frozen people out of the water. Over 1400 people would still have died but Lord and his crew would not have had to face the vilification that they did in the aftermath of the actual disaster.