There were plenty of experts who supported the SNP's position on EU membership and currency.
The BBC reported both positions on EU membership and currency That includes the lawyers and politicians that said Scotland would be fine joining the EU and the senior politicians in multiple countries and in EU positions that said that membership would not be smooth sailing.
On currency the 'yes' campaign kept bleating that they could have currency union. Is it really journalistic bias to explore whether that's really the case, given the number of people that said "no, you can't". Currency was a major issue in the referendum and it was continually in the news in an anti-'yes campaign' tone because the yes campaign had no fucking answers.
Sorry but I get bored of the continual "the BBC is biased" bullshit. Yes, at times it is, but far too fucking often "the BBC is biased" is actually whining that "the BBC didn't show an obvious bias to my point of view" or "how fucking dare the BBC let someone else have an opinion". Guess where I'd place you.
On the referendum I see the constant stream of stories about Salmond and relative lack of challenge to his continual bluster, bullshit and rhetoric as pretty fucking clear evidence that there was not a bias.