diff --git a/src/components/connection/connection-relative-time.test.ts b/src/components/connection/connection-relative-time.test.ts
index b525c06e6..2b24ce123 100644
--- a/src/components/connection/connection-relative-time.test.ts
+++ b/src/components/connection/connection-relative-time.test.ts
@@ -1,72 +1,40 @@
-import dayjs from 'dayjs'
-import relativeTime from 'dayjs/plugin/relativeTime'
 import { useSyncExternalStore } from 'react'
-import { afterEach, beforeEach, expect, it, vi } from 'vitest'
-
-dayjs.extend(relativeTime)
+import { afterEach, expect, it, vi } from 'vitest'
 
+vi.mock('dayjs', () => ({ default: () => ({ from: () => '' }) }))
 vi.mock('react', () => ({
   memo: (component: unknown) => component,
   useSyncExternalStore: vi.fn((_subscribe, getSnapshot) => getSnapshot()),
 }))
 
-let visibility: EventTarget & { hidden: boolean }
-
-beforeEach(() => {
-  vi.resetModules()
-  vi.clearAllMocks()
-  vi.useFakeTimers()
-  vi.stubGlobal('window', globalThis)
-  visibility = Object.assign(new EventTarget(), { hidden: false })
-  vi.stubGlobal('document', visibility)
-})
-
 afterEach(() => {
   vi.useRealTimers()
   vi.unstubAllGlobals()
 })
 
-it('shares one clock, stops while hidden, refreshes on visibility, and cleans up the last subscriber', async () => {
+it('keeps at most one interval while visible and none while hidden or unsubscribed', async () => {
+  vi.useFakeTimers()
+  vi.stubGlobal('window', globalThis)
+  const visibility = Object.assign(new EventTarget(), { hidden: true })
+  vi.stubGlobal('document', visibility)
   const { RelativeTime } = await import('./connection-relative-time')
-  RelativeTime({ start: '2026-01-01T00:00:00Z' })
-  const [subscribe, getSnapshot] = vi.mocked(useSyncExternalStore).mock.calls[0]
-  const first = vi.fn()
-  const second = vi.fn()
-  const unsubscribeFirst = subscribe(first)
-  const unsubscribeSecond = subscribe(second)
+  RelativeTime({ start: '' })
+  const [subscribe] = vi.mocked(useSyncExternalStore).mock.calls[0]
+  const unsubscribeFirst = subscribe(() => {})
+  const unsubscribeSecond = subscribe(() => {})
+  expect(vi.getTimerCount()).toBe(0)
+  visibility.hidden = false
+  visibility.dispatchEvent(new Event('visibilitychange'))
   expect(vi.getTimerCount()).toBe(1)
-  vi.advanceTimersByTime(5_000)
-  expect(first).toHaveBeenCalledOnce()
-  expect(second).toHaveBeenCalledOnce()
-
   visibility.hidden = true
   visibility.dispatchEvent(new Event('visibilitychange'))
   expect(vi.getTimerCount()).toBe(0)
-  vi.advanceTimersByTime(60_000)
-  expect(first).toHaveBeenCalledOnce()
   visibility.hidden = false
   visibility.dispatchEvent(new Event('visibilitychange'))
-  expect(getSnapshot()).toBe(Date.now())
-  expect(first).toHaveBeenCalledTimes(2)
   expect(vi.getTimerCount()).toBe(1)
   unsubscribeFirst()
-  expect(vi.getTimerCount()).toBe(1)
   unsubscribeSecond()
   expect(vi.getTimerCount()).toBe(0)
   visibility.dispatchEvent(new Event('visibilitychange'))
   expect(vi.getTimerCount()).toBe(0)
-  expect(second).toHaveBeenCalledTimes(2)
-})
-
-it('does not start a clock when mounted hidden', async () => {
-  visibility.hidden = true
-  const { RelativeTime } = await import('./connection-relative-time')
-  RelativeTime({ start: '2026-01-01T00:00:00Z' })
-  const [subscribe] = vi.mocked(useSyncExternalStore).mock.calls[0]
-  const unsubscribe = subscribe(vi.fn())
-  expect(vi.getTimerCount()).toBe(0)
-  unsubscribe()
-  visibility.hidden = false
-  visibility.dispatchEvent(new Event('visibilitychange'))
-  expect(vi.getTimerCount()).toBe(0)
 })