We want to travel from Lucerne to Interlaken Ost on Sun March 19th 2023. We see that there is a replacement bus service. If we get, say the 06:06 train, is the transfer to the bus at BRUENIG-HASLIBERG easy? Are we taking any risk as the transfer time is shown as only 3 minutes? I.E. does the bus transfer wait for each train arrival? We may be able to consider the 07:06 train if that is the case. Thanks, Roger