A switch creates and dynamically updates a latency map of a network to adjust routing of flows. A vacuum is applied via a tube which is inserted partway down the root canal. The closing member has a second position where the closing member opens the port and allows fluid communication between the intake passage and the vapor purge passage and extends into the fluid stream of the intake passage when fluid is flowing through the intake passage. Additionally, the connector body defines a channel configured for receipt of an elongate member and defines an elongate slot configured for receipt of the pivoting portion of the fixation element. 5 wt % based on the weight of the PX enriched stream, wherein the C8+ feedstock has a PX concentration of at least 70 wt % based on total weight of xylenes in the C8+ feedstock, which the C8+ feedstock having a C9+ hydrocarbons concentration in a range from 1 wppm to 10 wt % based on the total weight of the C8+ feedstock.