meandering

There’s a phase between wakefulness and sleep known as hypnagogia, during which we may experience hallucinations and our thoughts become illogical and meandering.

Other coaches could lose their players through meandering mottos.

We cross a vast countryside - scrub and grassland plains interspersed with views of lush farms – and pass a meandering river, craggy terrain and undulating hills.

Historian Heather Cox Richardson described it in her daily political newsletter, beginning with Trump's "long, meandering story" about golf legend Arnold Palmer "that ended with praise for Palmer's ... anatomy":

Trump’s meandering replies consisted of the usual grab-bag of tangential anecdotes and endless grievances, his interviewer repeatedly forced to keep him on track by reminding him of the topic he was supposed to be discussing.