@startuml test-par-no-activate
!theme mono

participant "Service" as Service
participant "Repo" as Repo
database "DB" as DB

par
    Service -> Repo: query1
    activate Repo
    Repo -> DB: SELECT 1
    activate DB
    DB --> Repo: result1
    deactivate DB
    Repo --> Service: data1
    deactivate Repo
and
    Service -> Repo: query2
    activate Repo
    Repo -> DB: SELECT 2
    activate DB
    DB --> Repo: result2
    deactivate DB
    Repo --> Service: data2
    deactivate Repo
end

@enduml