Problems with using DamlLedgerClient

When the system needs to listen contracts and query contracts, that is, when using getTransactionsClient and getActiveContractSetClient at the same time, it is better to use the same DamlLedgerClient to keep connected, or use different DamlLedgerClients.
For example, if I use a client for monitoring to listen and connection all the time, use another client for query and close the connection when filish quer. Will this affect the performance of Canton?