  With more robots being deployed in the world, users will likely interact with
multiple robots sequentially when receiving services. In this paper, we
describe an exploratory field study in which unsuspecting participants
experienced a ``person transfer'' -- a scenario in which they first interacted
with one stationary robot before another mobile robot joined to complete the
interaction. In our 7-hour study spanning 4 days, we recorded 18 instances of
person transfers with 40+ individuals. We also interviewed 11 participants
after the interaction to further understand their experience. We used the
recorded video and interview data to extract interesting insights about
in-the-field sequential human-robot interaction, such as mobile robot
handovers, trust in person transfer, and the importance of the robots'
positions. Our findings expose pitfalls and present important factors to
consider when designing sequential human-robot interaction.
