The invitation came from none other than
Chief Rider - Spanish Riding School, Vienna
Director - Training Centre, Heldenberg (Spanish Riding School)
Within fifteen minutes of my accepting his invitation, he had endorsed all the equestrian skills on my LinkedIn profile plus some others. I imagine his decisions could only have been guided by the information on my profile and possibly this website, which had had more than the usual number of page views that day and the day before.
However, regardless of how he came to his decision, I am feeling honoured and humbled at the same time.
I very much hope that I shall be able to visit the Spanish Riding School one day soon and perhaps even meet him in person!
Thank you very much indeed, Andreas Hausberger.