While I don't go along with the whole "friendly derby" balls, this isn't true.
I didn't go the cup final in 86, but did in 89. Scores of Reds and blues both times travelled down together and in 89 most of the ground was mixed. It seemed that way anyway.
Perhaps cos we were both winning the biggest honours at the time it wasn't an issue, but I don't remember anything like the tension we have nowadays until the late 90's.... Funnily enough when we were both s***e!
You can't base anything on the '89 Final for obvious reasons.
And indeed there was still some semblance of the "friendly derby" in the '86 Final but even if we played each other in this season's Final there will be loads travelling down together.
I say Heysel was the death knell because things changed after that.
Our club was back in the big time and they pulled the rug from under us.
I remember we played sommat called the Screen Sports Super Cup the first season we were all banned from Europe, a competition designed to give extra revenue for the teams affected by the Ba,
The chant of "murderers, murderers" was our refrain throughout the game when we played Liverpool in a two legged final.
Certainly it was after Heysel that I became a "Bitter Blue".
Another thing I think contributed toward the deteriation in relations between the supporters was the influx of non Scouse Kopites.
I first came into contact with them when I lived in London in the mid 80s and we used to travel up to the derby on the train from Euston. There would have been Cockney Kopites around and they were the very snuggest of glory hunters.
I have to say out of town Kopites are a particularly nasty strain of whatever virus infects Kopites in general.
The biggest rows I have ever had with Kopites when I have been abroad on holiday were with blokes from London, Scotland, Ireland and other parts of the country.